.lecture-post{
    padding: 10px;
}
.lecture-image{
    width: 100vw;
}
.lecture-image-sp{
    display: none;
}
.lecture-top {
    display: flex;
    margin-left: 3%;
    flex-wrap: nowrap;
    flex-direction: row;
    align-content: center;
    align-items: center;
    position: relative;
    background: white;
    z-index: 2;
    width: 70%;
}
.lecture-number {
    width: 20%;
}
.lecture-header {
    color: #0182cd;
    font-size: 1.5vw;
    white-space: pre-line;
}
.lecture-description {
    text-align: center;
    font-size: 20px;
    border: solid #3e9ba2;
    padding: 2vw;
    border-radius: 18px;
    margin-top: -9px;
    position: relative;
    z-index: 1;
}
.lecture-left, .lecture-right{
    display: flex;
    flex-wrap: nowrap;
    flex-direction: row;
    align-items: center;
}
.lecture-right{
    flex-direction: row-reverse;
}
.lecture-content-image{
    width: 100%;
}   

@media only screen and (max-width: 500px) {
    .lecture-image{
        display: none;
    }
    .lecture-image-sp{
        width: 100%;
        display: block;
    }
    .lecture-left, .lecture-right {
        flex-wrap: wrap;
    }
    .lecture-top {
        width: 92%;
    }
    .lecture-header {
        font-size: 16px;
    }
    .lecture-description {
        font-size: 14px;
    }
    .lecture-number {
        width: 15%;
    }
}