ul.talks-list {
    margin: 0;
    padding: 0;
    list-style-type: none;
}
    ul.talks-list li {
        padding: 15px;
        margin-bottom: 10px;
        background-image: linear-gradient(to right, #5bcefa, 40%, #f5a9b8);
        border-radius: 15px;
    }
        ul.talks-list > li::before {
            all: revert;
        }
    ul.talks-list .header-container {
        display: flex;
        flex-flow: row wrap;
        align-items: center;
        justify-content: center;
        gap: 15px;
        margin: 0;
    }
        ul.talks-list img {
            flex: 0 0 250px;
            width: calc(100% - 10px);
            border: 5px solid white;
        }

        ul.talks-list a {
            flex: 1 1 300px;
            margin: 0;
            display: flex;
            justify-content: center;
        }
            ul.talks-list h3 {
                margin: 0;
                width: fit-content;
                font-size: 200%;
                line-height: 150%;
                text-align: center;
                background-color: white;
                padding: 15px;
                border-radius: 15px;
            }
    ul.talks-list details {
        grid-column: 1 / 3;
        grid-row: 2;
        margin: 0;
        margin-top: 15px;
        padding: 15px;
        background-color: white;
        border-radius: 15px;
    }
        ul.talks-list summary {
            font-weight: 700;
            color: #067dac;
            cursor: pointer;
        }
            ul.talks-list summary::marker {
                color: black;
                font-size: 21px;
            }
            ul.talks-list summary:hover {
                color: #e41b43;
            }
            ul.talks-list details p {
                margin: 0;
                margin-top: 0.5lh;
            }