.mdc-list-item__secondary-text {
    -webkit-touch-callout: none; /* iOS Safari */
    -webkit-user-select: none; /* Safari */
    -khtml-user-select: none; /* Konqueror HTML */
    -moz-user-select: none; /* Old versions of Firefox */
    -ms-user-select: none; /* Internet Explorer/Edge */
    user-select: none; /* Non-prefixed version, currently supported by Chrome, Edge, Opera and Firefox */
}

.card-box {
    margin: 5px 5%;
}

#my-card {
    height: 300px;
    width: 300px;
    margin: 10px auto;
}

.box {
    margin: 5px auto;
}