*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

body,html{
    width: 100%;
    height: 100%;
}

body{
    background-color: #454545;
    color: #fff;
}

.container{
    width: 100%;
    height: 100vh;
    padding: 20px;
    display: flex;
}

.left,.right{
    flex-basis: 50%;
    padding: 10px;

}

textarea{
        width: 100%;
        height: 28%;
        background-color: #1f1f1f;
        color: #fff;
        padding: 10px 20px;
        border: none;
        outline: none   ;
        font-size: 18px;
}

iframe{
    width: 100%;
    height: 95%;
    background-color: #fff;
    border: none;
    outline: none;
}

label i{
    margin-left: 10px;
    margin-right: 10px;
}

label{
    display: flex;
    align-items: center;
    background-color: #000;
    height: 30px;
}

.ri-html5-fill {
    color:orange;
}

.ri-css3-fill{
    color: skyblue;
}

.ri-javascript-fill{
    color: yellow;
}

.ri-play-fill{
    color: green;
}