styles.css

/* Reset / Normalize */

/*! normalize.css v8.0.1 | MIT License | github.com/necolas/normalize.css */html{line-height:1.15;-webkit-text-size-adjust:100%}body{margin:0}main{display:block}h1{font-size:2em;margin:.67em 0}hr{box-sizing:content-box;height:0;overflow:visible}pre{font-family:monospace,monospace;font-size:1em}a{background-color:transparent}abbr[title]{border-bottom:none;text-decoration:underline;text-decoration:underline dotted}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}img{border-style:none}button,input,optgroup,select,textarea{font-family:inherit;font-size:100%;line-height:1.15;margin:0}button,input{overflow:visible}button,select{text-transform:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]::-moz-focus-inner,[type=reset]::-moz-focus-inner,[type=submit]::-moz-focus-inner,button::-moz-focus-inner{border-style:none;padding:0}[type=button]:-moz-focusring,[type=reset]:-moz-focusring,[type=submit]:-moz-focusring,button:-moz-focusring{outline:1px dotted ButtonText}fieldset{padding:.35em .75em .625em}legend{box-sizing:border-box;color:inherit;display:table;max-width:100%;padding:0;white-space:normal}progress{vertical-align:baseline}textarea{overflow:auto}[type=checkbox],[type=radio]{box-sizing:border-box;padding:0}[type=number]::-webkit-inner-spin-button,[type=number]::-webkit-outer-spin-button{height:auto}[type=search]{-webkit-appearance:textfield;outline-offset:-2px}[type=search]::-webkit-search-decoration{-webkit-appearance:none}::-webkit-file-upload-button{-webkit-appearance:button;font:inherit}details{display:block}summary{display:list-item}template{display:none}[hidden]{display:none}

/* Variables */

:root {
    --color-primary: #FF6565;
    --color-secondary: #071629;
    --color-black:  #090909;
    --color-white: #FFFFFF;
    --color-grey: #a0a0a0;
    --color-light-grey: #f3f3f3;
    --color-dark-grey: #353535;

    --text-color: var(--color-black);

    --font-family: 'Sans Pro', 'Spin Cycle', sans-serif;

    --font-size-small: 1.2rem;
    --font-size-medium: 1.6rem;
    --font-size-large: 1.8rem;
    --font-size-x-large: 2.3rem;
    --font-size-xx-large: 3.4rem;
    --font-size-xxx-large: 4.8rem;

    --font-weight-regular: 400;
    --font-weight-bold: 700;

    --line-height-small: 1.2;
    --line-height-base: 1.5;
    --line-height-big: 1.8;
}

/* Base */

*, *:before, *:after {
   box-sizing: border-box;
}

html {
   scroll-behavior: smooth;
   font-size: 62.5%;
}

body {
   margin: 0;
   border: 1px solid var(--color-black);
   color: var(--color-white);
   background-color: var(--color-black);
   font-family: var(--font-family);
   font-size: var(--font-size-medium);
   font-weight: var(--font-weight-regular);
   text-align: center;
}

h1, h2, h3, h4, h5, h6 {
   font-weight: var(--font-weight-bold);
}

a {
   text-decoration: none;
}

.button {
   color: var(--color-white);
   background-color: var(--color-primary);
   border-radius: 40px;
   font-weight: var(--font-weight-bold);
   text-transform: uppercase;
   padding: 15px 30px;
   font-size: var(--font-size-small);
}

.button:hover {
   opacity: 0.9;
}

ul, nav {
   list-style: none;
}

hr {
   width: 150px;
   height: 2px;
   background-color: var(--color-primary);
   border: 0;
   margin-bottom: 80px;
}

/* Sections  */

section, footer {
   display: flex;
   flex-direction: column;
   align-items: center;
   padding: 125px 100px;
}

section .title {
   font-weight: var(--font-weight-bold);
   font-size: var(--font-size-xx-large);
   margin-bottom: 50px;
}

@media screen and (max-width: 1000px) {
   section {
     padding: 100px 50px;
   }
}

@media screen and (max-width: 600px) {
   section {
      padding: 80px 30px;
   }
}

.hero-title {
   margin-bottom: 0;
}

.hero-subtitle {
   font-size: var(--font-size-medium);
   margin-bottom: 5rem;
}

section p {
   max-width: 637px;
   margin-bottom: 35px;
   line-height: var(--line-height-big);
}

.columns {
   width: 100%;
   display: flex;
   flex-wrap: row wrap;
   justify-content: center;
}

/* Header */

header {
   position: absolute;
   top: 0;
   left: 0;
   z-index: 10;
   width: 100%;
   display: flex;
   justify-content: space-between;
   align-items: center;
   padding: 30px 100px 0;
   background: transparent;
}

.hero .hero-title {
   margin-top: 300px;
}

header .menu-icon {
   cursor: pointer;
   padding: 2.5rem;
   position: relative;
   user-select: none;
}

header .menu-icon .navicon {
   background: var(--color-white);
   display: block;
   width: 1.2rem;
   height: .2rem;
   position: relative;
   transition: background .2s ease-out;
}

header .menu-icon .navicon:before, header .menu-icon .navicon:after {
   content: '';
   display: block;
   width: 100%;
   height: 100%;
   position: absolute;
   background: var(--color-white);
   transition: all .2s ease-out;
}

header .menu-icon .navicon:before {
   top: .7rem;
   width: 2rem;
}

header .menu-icon .navicon:after {
   top: -.7rem;
   width: 2rem;
}

header .menu-btn {
   display: none;
}

header .menu-icon {
   display: none;
}

.menu-btn:checked ~ nav {
   display: block;
   max-height: 100%;
   overflow: inherit;
}

header .menu-btn:checked + .menu-icon .navicon {
   background: transparent;
}

header .menu-btn:checked + .menu-icon .navicon::before {
   transform: rotate(-45deg);
}

header .menu-btn:checked + .menu-icon .navicon::after {
   transform: rotate(45deg);
}

header .menu-btn:checked + .menu-icon .navicon::before, header .menu-btn:checked + .menu-icon .navicon::after {
   top: 0;
}

header nav {
   display: flex;
}

header nav li {
   margin: 0 30px;
   text-transform: lowercase;
   font-weight: var(--font-weight-bold);
}

header nav li:first-child {
   margin-left: 0;
}

header nav li:last-child {
   margin-right: 0;
}

header nav li a {
   color: var(--color-white);
}

header nav li a:hover {
   color: var(--color-primary);
}

@media screen and (max-width: 768px) {
   header {
      flex-wrap: wrap;
      justify-content: center;
   }
   
   header nav {
      display: none;
      flex-direction: column;
      overflow: hidden;
      max-height: 0;
      transition: max-height .2s ease-out;
      justify-content: center;
   }

   header nav li {
      margin: 0 0;
      padding-bottom: 3rem;
   }

   header .menu-icon {
      display: initial;
      order: -1;
   }
}

/*  Hero */

.hero {
   position: relative;
   justify-content: center;
   min-height: 100vh;
   text-align: center;
}

.hero .background-image {
   position: absolute;
   background-image: url(./images/headphones_hero_1.jpg);
   background-position: center;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-size: cover;
   background-color: var(--color-black);
   z-index: -1;
}

.hero .button, .form-group .button{
   box-shadow: 5px 1px 15px 2px rgba(0, 0, 0, 0.27);
   margin-bottom: 5rem;
}

/* Description */

.description {
   background: var(--color-white);
   color: var(--color-secondary);
}

.description .columns {
   display: flex;
}

.description .columns li {
   padding: 0 50px;
}

.description .columns li i {
   font-size: var(--font-size-xxx-large);
   color: var(--color-primary);
}

@media screen and (max-width: 768px) {
   .description .columns {
      display: flex;
      flex-wrap: wrap;
      padding: 0;
   }

   .description .columns li {
      width: 50%;
   }
}

@media screen and (max-width: 575px) {
   .description .columns {
      flex-direction: column;
      padding: 0;
   }

   .description .columns li {
      width: auto;
   }
}

/* Results */

.results {
   background-position: center;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background-size: cover;
   background-color: var(--color-black);
   z-index: -1;
   background-image: url(./images/headphones_hero_2.jpg);
}

.results .columns {
   display: flex;
}

.results .columns .poly {
   background-image: url(./images/pentagone.png);
   background-size: 100%;
   background-repeat: no-repeat;
   width: 190px;
   height: 190px;
   display: flex;
   flex-flow: column;
   justify-content: center;
   align-items: center;
   margin: 50px;
}

.results .columns .poly .number {
   margin: 40px 10px 5px 5px;
   font-weight: var(--font-weight-bold);
   font-size: var(--font-size-xxx-large);
}

.results .columns .poly .subtitle {
   margin:  0 0 20px 0;
   font-size: var(--font-size-small);
}

@media screen and (max-width: 1000px) {
   .results .columns {
      display: flex;
      flex-wrap: wrap;
      padding: 0;;
   }

   .description .columns .poly {
      width: 50%;
   }
}

@media screen and (max-width: 575px) {
   .description .columns {
      flex-direction: column;
      padding: 0;
   }
}

/* Contact */

.contact {
   background: var(--color-white);
   color: var(--color-secondary);
}

input[type=text], input[type=email] {
   position: relative;
   width: 100%;
   padding: 1.2rem;
   line-height: 1;
   border: none;
   border-bottom: .1rem solid var(--color-black);
   background-color: var(--color-white);
   box-shadow: none;
   outline: 0;
 }

input[type=text]:focus, input[type=email]:focus {
   border-bottom: .1rem solid var(--color-primary);
 }

::placeholder {
   font-style: var(--font-weight-bold);
   font-size: var(--font-size-medium);
   color: var(--color-secondary);
 }

 .form-group {
   padding: 1rem;
   margin: 0;
   margin-bottom: 5rem;
   background-color: var(--color-white);
 }

/* Footer */

.footer {
   background: var(--color-secondary);
   padding-top: 70px;
   padding-bottom: 20px;
}

.footer .items {
   display: flex;
   justify-content: space-between;
   align-items: center;
   width: 100%;
   padding: 0 100px 0;
}

.footer .items ul {
   display: flex;
}

.footer .copy {
   color: var(--color-dark-grey);
   padding-bottom: 5px;
}

.footer .items ul .btn-secondary{
   background: var(--color-white);
   color: var(--color-secondary);
   border-radius: 40px;
   font-weight: var(--font-weight-bold);
   text-transform: uppercase;
   padding: 7px 10px;
}

.footer .items ul li {
   margin: 0 10px;
   text-transform: lowercase;
   font-weight: var(--font-weight-bold);
}

.footer .items ul li:first-child {
   margin-left: 0;
}

.footer .items ul li:last-child {
   margin-right: 0;
}

@media screen and (max-width: 768px) {
   .footer .items {
      flex-direction: column;
      padding: 0;
   }

   .footer .items ul {
      padding-left: 0;
      margin-top: 40px;
      margin-bottom: 40px;
   }
}