style.css

body {
    text-align: center;
    margin: 0px;
    background-color: black;
}

#main {
    /*background: linear-gradient(90deg, rgba(2,0,36,1) 0%, rgba(9,9,121,1) 35%, rgba(0,212,255,1) 100%);*/
    background: url(background.png);
    height: 900px;
    width: 96.5%;
    border-radius: 15px;
    margin-top: 15px;
    margin-bottom: 15px;
    border-color: white;
    border-width: 3px;
    border-style: solid;
}

h1 {
    font-family: 'Courgette', cursive;
    color: white;
    font-size: 70px;
}

h2 {
    color: white;
    font-size: 20px;
    margin-top: -30px;
}

.src-click {
    height: 300px;
    margin-top: 70px;
    margin-left: 18px;
    margin-right: 18px;
    border-style: solid;
    border-width: 5px;
    border-color: white;
}

.src-click:hover {
    cursor: pointer;
    box-shadow: 0 10px 15px 0 rgb(0, 0, 0), 0 18px 45px 0 rgba(0, 0, 0, 0.19);
}