* {
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

img {
    max-width: calc(100vw);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

/*
.container {
    width: 308px;
    margin: auto;
    margin-bottom: 50px;
}

.navbtn {
    text-decoration: none;
    width: 150px;
    height: 100px;
    font-size: 1.7rem;
    border-width: 5px;
    display: block;
    float: left;
    margin-right: 2px;
    margin-left: 2px;
    border-radius: 50px;
}
*/

.container {
    max-width: 250px;
    margin: auto;
}

.btncontainer {
    width: 50%;
    padding: 0px;
    margin: 0px;
    float: left;
}

.navbtn {
    display: block;
    width: 100px;
    height: 100px;
    margin: auto;
    margin: 50px auto;
    font-weight: bold;
    cursor: pointer;
    border-radius: 30%;
    background-image: linear-gradient(to bottom, white, rgb(230, 230, 230));
}

.navbtn:hover {
    filter: brightness(1.05);
}

.navbtn:disabled {
    opacity: 50%;
    cursor: not-allowed;
}

.navbtn p {
    font-size: 50px;
    margin-top: 10px;
}

.btncontainer a {
    text-decoration: none;
}

.clear {
    clear: both;
}