.speakers {
    color: green;
}

.borderdl {
    border: solid 7px transparent;
    padding: 15px;
    margin-bottom: 15px;
    break-inside: avoid;
}

.borderdl:hover,
.borderdl:focus {
    border: dashed 7px rgba(43, 94, 157, 0.167);
}

dt {
    font-size: x-large;
}

.article li {
    margin-bottom: 10%;
}

details {
    break-inside: avoid-column;
}

.center {
    margin-top: 10px;
}