body {
    font-family: "Calibri";
    width: 100vw;
}
header, footer {
    background: #33222f;
    color: white;
    padding: 5px;
    margin-bottom: 50px;
}
.top-nav {
    margin-top: 5px;
    display: flex;
}
.top-nav a {
    text-decoration: none;
    color: #888888;
    flex: auto;
}
main {
    min-height: 500px;
    background: white;
    color: black;
}
.a {
    background: linear-gradient(135deg, #0000ff, #ff00ff, #ff5555);
    color: white;
    text-align: center;
    padding: 20px;
    border-radius: 10px;
}
.a1 {
    margin: 5px;
    background: #ff6b6b;
    padding: 1ch;
    border-radius: 5ch;
}
.a1 a {
    text-decoration: none;
    color: white;
}
.b, .c {
    justify-content: center;
    text-align: center;
    align-content: center;
}
footer {
    margin-bottom: 0;
    margin-top: 50px;
}
input, button {
    margin: 5px;
}
button {
    background: #ff6b6b;
    color: white;
    outline: 5px solid rgba(0, 0, 0, 0.6);
}