index.css

html {
    scroll-behavior: smooth;
    background: #494f5c;
    color: #e8eef2;
    font-family: trebuchet ms,Verdana,verdana ref,segoe ui,Candara,lucida grande,lucida sans unicode,lucida sans,Tahoma,sans-serif;
}
h1 {
    font-size: 2.5em;
}

.center {
    width: 100%;
    text-align: center;
}

.flex {
    justify-content: center;
    display: flex;
    flex-wrap: wrap;
    flex-flow: row wrap;
}
a {
    outline: 0;
}
.podcatcher {
    background: #3e424d;
    border-radius: 5px;
    margin: 10px;
    cursor: pointer;
    text-decoration: none;
    padding: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 2em;
    transition: 0.3s;
}
.podcatcher:hover {
    transform: scale(1.07);
    filter: drop-shadow(0 0 10px rgb(68, 70, 71));
}
.podcatcher > img {
    width: 30px;
}