style.css

body{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    background-color: #dde6e1;
}
img{
    position: relative;
    width: 300px;
    top: 11.5rem;
    margin-left: 10rem;
}
#p1{
    position: relative;
    font-style: helvetica;
    font-size: 30px;
    font-weight: lighter;
    margin-left: 11rem;
    width: 29.5rem;
    top: 10.5rem;
}
#form1{
    position: relative;
    left: 50rem;
    bottom: 5rem;
    align-items: center;
    background-color: #fff;
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .1), 0 8px 16px rgba(0, 0, 0, .1);
    box-sizing: border-box;
    margin: 40px 0 0;
    padding: 20px 0 28px;
    width: 396px;
    height: 330px;
}
input{
    margin-left: 20px;
}
.form-control{
    width: 350px;
    height: 7vh;
}
#password{
    position: relative;
    top: 15px;
}
#btn01{
    position: relative;
    top: 25px;
    margin-left: 20px;
    width: 350px;
    font-size: 20px;
    font-weight: bolder;
}
#a1{
    position: relative;
    top: 35px;
    left: 7.9rem;
    font-size: 18px;
    text-decoration: none;
}
#btn02{
    position: relative;
    top: 25px;
    margin-left: 20px;
    width: 350px;
    font-size: 20px;
    font-weight: bolder;
}
#a2{
    position: relative;
    top: 2.3rem;
    left: 6rem;
    color: #fff;
    background-color: #42B72A;
    font: 17px helvetica arial,sans-serif;
    padding: 10px;
    text-decoration: none;
    margin-left: 15px;
    border-radius: 5px ;
}
.line{
    position: relative;
    top: 30px;
    width: 350px;
    align-items: center;
    border-bottom: 1px solid #dadde1;
    display: flex;
    margin: 20px 20px;
}
#p2{
    position: relative;
    bottom: 4rem;
    left: 53rem;
}
#a3{
    font-weight: bold;
    color: black;
    font-size: 14px;
    text-decoration: none;
}
#a3:hover{
    text-decoration: underline;
}
/* Creation of hover SIGN UP*/
#upper{
    position: relative;
    top: 68px;
    left: 60%;
    margin-left: 30px;
    box-sizing: border-box;
    background-color: #ffffff;
    width: 432px;
    content: "";
    box-shadow: 0 2px 4px rgba(0, 0, 0, .1), 0 8px 16px rgba(0, 0, 0, .1);
    border-radius: 8px 8px 0px 0px ;
}
#downer{
    position: relative;
    top: 39px;
    left: 60%;
    margin: 30px;
    box-sizing: border-box;
    background-color: #fff;
    border-radius: 0 0 8px 8px;
    border-top: 1px solid #dadde1;
    box-shadow: 0 2px 4px rgba(0, 0, 0, .1), 0 8px 16px rgba(0, 0, 0, .1);
    width: 432px;
    height: 100%;
    bottom: 29.1px;
    content: "";
}
#h1{
    margin-left: 20px;
}
#p3{
    margin-left: 20px;
}
#fname .form-control{
    width: 180px;
}
#lname .form-control{
    position: relative;
    bottom: 46.8px;
    left: 210px;
    width: 180px;
}
#email2 .form-control{
    position: relative;
    bottom: 30px;
    width: 90%;
}
#pwd .form-control{
    position: relative;
    bottom: 42px;
    width: 90%;
}
#birthday{ 
    position: relative;
    bottom: 60px;
    font-size: 15px;
    color: #606770;
    margin: 20px 0px 20px 20px;
}
#icn{
    color: #606770;
    width: 10px; 
}
.bselector{
    position: relative;
    bottom: 80px;
}
.dropdown-item{
 position: relative;
 width: 120px;
 margin-left: 20px;
 border: #fffcfc 0.5px solid;
 background-color: -internal-light-dark(rgb(255, 255, 255), rgb(59, 59, 59));
 border-radius: 2px;
 border-width: 1px;
 border-style: solid;
 border-color: -internal-light-dark(rgb(118, 118, 118), rgb(133, 133, 133));
 border-radius: 5px;
 display: inline;
 font-size: 15px;
 font-weight: normal;
 height: 36px;
 line-height: 20px;
}
.dropdown-item:hover{
    background-color: #ffffff;
}
#month{
    color: black;
    padding: 0px 20px 0px 8px;
    background-color: #fff;
    font-size: 15px;
    font-weight: normal;
    border: 1px solid #ccd0d5;
}
#day{
    color: black;
    background-color: #fff;
    margin: 0px 0px 0px 12px;
    padding: 0px 20px 0px 8px;
    font-size: 15px;
    border: 1px solid #ccd0d5;
    font-weight: normal;

}
#year{
    color: black;
    background-color: #fff;
    margin: 0px 0px 0px 12px;
    padding: 0px 20px 0px 8px;
    font-size: 15px;
    border: 1px solid #ccd0d5;
    font-weight: normal;
}
select:not(:-internal-list-box) {
    overflow: visible !important;
}
#icn2{
    color: #606770;
}
#gender{
    position: relative;
    bottom: 70px;
    margin-left: 20px;
}
.gselector {
    display: inline-block;
    position: relative;
    bottom: 73px;
    margin: 5px 20px 5px 20px ;
}
._5k_2 {
    background-color: #fff;
    border: 1px solid #ccd0d5;
    border-radius: 5px;
    box-sizing: border-box;
    display: inline-block;
    flex: 1 0 auto;
    font-weight: normal;
    height: 36px;

    width: 120px;
    border-width: 1px;
    display: inline-block;
    padding: 5px 0px 5px 4px;
}
 span {
    font-family: inherit;
}
._8esf ._5k_2 ._8esa {
    position: relative;
    left: 20px;
}
._8esa{
    position: relative;
    left: 10px;
}
._5k_2 .male{
    position: relative;
    left: 30px;
}
._58mu {
    width: 399px;
    color: #777777;
    font: 11px helvetica,arial,sans-serif;
    margin-left: 20px;
    position: relative;
    bottom: 70px;
}
._58mu a{
 color: #385898;
}
._1lch{
    position: relative;
    margin-top: 30px;
    bottom: 90px;
    left: 25%;
}
.sign-up{
    font-family: 'Freight Sans Bold', Helvetica, Arial, sans-serif !important;
    font-weight: bold !important;
    text-rendering: optimizelegibility;
    margin-top: 10px;
    margin-bottom: 10px;
    min-width: 194px;
    padding: 7px 20px;
    text-align: center;
    background-color: #00a400;
    border-radius: 6px;
    padding: 20px 30px;
    font-size: 18px;
    font-weight: 600;
    height: 36px;
    overflow: hidden;
    padding: 0 32px;
    text-shadow: none;
    font-family: Helvetica, Arial, sans-serif;
    appearance: button;
    color: #fff;
    border: 1px solid;
    border-radius: 5px;
    cursor: pointer;
    display: inline-block;
    letter-spacing: 1px;
    position: relative;
    border-color: -internal-light-dark(rgb(118, 118, 118), rgb(133, 133, 133));
    font-size: 19px;
    line-height: 126%;
}
._1lch button:hover {
    background: linear-gradient(#67ae55, #578843);
    background-color: #69a74e;
}
.hidden_elem {
    display: none !important;
}

._8esf ._58mi:after {
    content: '';
    display: inline-block;
    height: 36px;
    left: 0;
    position: absolute;
    right: 0;
    top: 0;
    vertical-align: middle;
}
/* hover create new account */
._8icy ._6lti {
    border: none;
    border-radius: 6px;
    font-size: 17px;
    line-height: 48px;
    padding: 0 16px;
}
._42ft {
    cursor: pointer;
    display: inline-block;
    text-decoration: none;
    white-space: nowrap;
}
._6lti {
    font-size: 14px;
}
._4jy6, ._4jy6._42fr:active, ._4jy6._42fr._42fs {
    line-height: 42px;
    padding: 0 24px;
}
._4jy2 {
    background-color: #42b72a;
    border-color: #42b72a;
}
._4jy1, ._4jy2 {
    color: #fff;
}
._4jy0 {
    transition: 200ms cubic-bezier(.08,.52,.52,1) background-color, 200ms cubic-bezier(.08,.52,.52,1) box-shadow, 200ms cubic-bezier(.08,.52,.52,1) transform;
}
._4jy0 {
    border: 1px solid;
    border-radius: 2px;
    box-sizing: content-box;
    font-size: 12px;
    -webkit-font-smoothing: antialiased;
    font-weight: bold;
    justify-content: center;
    padding: 0 8px;
    position: relative;
    text-align: center;
    text-shadow: none;
    vertical-align: middle;
}
#overlay{
    display: none;
    position: relative;
    bottom: 0;
    left: 0;
     /* Height & width depends on how you want to reveal the overlay (see JS below) */   
     height: 100%;
     width: 100%;
     position: fixed; /* Stay in place */ 
     background-color:  rgba(255, 255, 255, .10); /* Black fallback color */
     background-color: rgba(10, 10, 10, .9); /*opacity */
     overflow-x: hidden; /* Disable horizontal scroll */
     transition: 0.15s; /* 0.5 second transition effect to slide in or slide down the overlay (height or width, depending on reveal) */
}
.closebtn{
    position: relative;
    left: 13.5rem;
    bottom: 10px;
    z-index: 2;
    color: gray;
    text-decoration: none;
    font-size: 40px;
  }
#create{
    width: 50%;
    height: 70%;
}