styles.css

*{
    margin: 0;
    padding: 0;
    font-family: Georgia, 'Times New Roman', Times, serif;
    box-sizing: border-box;
    overflow: hidden;
}
h1{
    margin-left: 20px;
    margin-top: 10px;
}
body{
    background: rgb(13, 169, 231);
    color: white;
}
.container{
    width: 100%;
    height: 100vh;
    padding: 20px;
    display: flex;
}
.left,.right{
    flex-basis: 50%;
    padding: 10px;
}
textarea{
    background: darkslateblue;
    height: 28%;
    width: 100%;
    color: white;
    padding: 10px 20px;
    border: 0;
    outline: 0;
    font-size: 18px;
}
iframe{
    width: 100%;
    height: 95%;
    background: white;
    border: 0;
    outline: 0;
}
label i{
    margin-right: 10px;
    margin-left: 10px;
}
label{
    display: flex;
    align-items: center;
    background: #000;
    height: 30px;
}