body {
    background-color: black;
    color: #d5d5d5;
    font-family: Consolas, serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

}

.myButton {
    background-color:#ededed;
    border-radius:28px;
    border:1px solid #dcdcdc;
    display:inline-block;
    cursor:pointer;
    color:#777777;
    font-family: Arial, sans-serif;
    font-size:17px;
    padding:16px 31px;
    text-decoration:none;
    text-shadow:0px 1px 0px #ffffff;
    margin-bottom: 16px;
}
.myButton:hover {
    background-color:#dfdfdf;
}

.myButton:disabled{
    color: #ededed;
}

.gleichung {
    font-family: Consolas, Serif;
}

input[type=text]{
    width: 3em;
    text-align: center;
}

#waehleRechenweg{
    opacity: 0;
    transition: opacity 500ms linear;
}

#rechenweg{
    opacity: 0;
    transition: opacity 500ms linear;
    white-space: pre;
}

.richtigeAntwort {
    background-color:#77d42a;
    -webkit-border-radius:28px;
    -moz-border-radius:28px;
    border-radius:28px;
    border:1px solid #268a16;
    display:inline-block;
    cursor:pointer;
    color:#306108;
    font-family:Arial;
    font-size:17px;
    padding:16px 31px;
    text-decoration:none;
    text-shadow:0px 1px 0px #aade7c;
    margin-bottom: 16px;
}

.falscheAntwort {
    background-color:#d0451b;
    border-radius:28px;
    border:1px solid #942911;
    display:inline-block;
    cursor:pointer;
    color:#ffffff;
    font-family:Arial;
    font-size:17px;
    padding:16px 31px;
    text-decoration:none;
    text-shadow:0px 1px 0px #854629;
    margin-bottom: 16px;
}