.container {
    margin: 0 auto;
    width: 1200px;
    height: auto;
    background-color: rgb(20,126,194);
    padding: 20px;
    padding-top: 1px;
}
.separator-10{
    height: 10px;
}

.row{
    display: flex;
    gap: 50px;

}
.col {
    width: 50%;
    border: none;
    background-color: lightskyblue;
    padding: 10px;
}

.col-1 {
    width: 50%;
    border: none;
    background-color: lightskyblue;
    padding: 10px;
}

h1 {
    text-align: center;
    color: black;

}

h2 {
    text-align: center;
}
.js{
    color: white;
    background-color: gray;
    padding: 10px;
}
.js em{
    display: block;
    padding: 10px 0;
}
.js-echo{
    color: #333333;
    background-color: #ade8e8;
    padding: 10px;
}
.js-echo em{
    display: block;
    padding: 10px 0;
}

.js-function{
    color: #333333;
    background-color: #caade8;
    padding: 10px;
}
.js-function em{
    display: block;
    padding: 10px 0;
}
span{
    color: yellow;
}