* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: sans-serif;
}

body {
    background: linear-gradient(to right top, #2b2b2b, #383838, #454545, #515151, #616161);
    color: #fff;
    font-family: Arial, sans-serif;
    height: 100vh;
}

.container{
    width: 100%;
    height: 95vh;
    padding: 5px;
    display: flex;
}

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

.left{
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.left .box{
    height: 25vh;

}

textarea{
    width: 100%;
    height: 100%;
    resize: none;
    background-color: #1f1f1f;
    color: rgb(184, 184, 184);
    padding: 10px 20px;
    outline: none;
    font-size: 18px;
    border-radius: 0px 0px 5px 5px;
    border: 1px solid #ccc;
    font-family: monospace;
}

textarea:focus{
    background-color: #2a2a2a;
    outline: none;
    border-color: #007bff;
}

iframe{
    width: 100%;
    height: 100%;
    background-color: #f8f5f5;
    border: none;
    outline: none;
    border-radius: 2px 2px 5px 5px;
}

label i{
    margin: 1px 7px 2px ;
}
label{
    display: flex;
    align-items: center;
    background-color: #1a1a1a;
    border-radius: 5px 5px 0px 0px;
    padding: 4px 2px 2px 2px;
    border: 2px solid #1a1a1a;
}

.html-color{
    color: #ff5733 ;
}
.css-color{
    color: #5f8cf5;
}
.js-color{
    color: rgb(248, 248, 65);
}
.run-color{
    color:rgb(0, 242, 255);
}