CSS margin-top 속성으로 컨텐츠 위로 보내기

🔍 margin-top 속성 없을때

.summary {
    text-align: center;
    width: 800px;
    position: relative;
    margin: auto;
    background-color: #383838;
    /* margin-top: -100px; */
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0px 1px 18px 10px rgba(0, 0, 0, 0.5);
    color: #fff;
}

.summary h2{
    margin-bottom: 20px;
    font-size: 35px;
}

.summary p{
    margin-bottom: 20px;
}

🔍 margin-top 속성 있을때

.summary {
    text-align: center;
    width: 800px;
    position: relative;
    margin: auto;
    background-color: #383838;
    margin-top: -100px;
    border-radius: 14px;
    padding: 20px;
    box-shadow: 0px 1px 18px 10px rgba(0, 0, 0, 0.5);
    color: #fff;
}

.summary h2{
    margin-bottom: 20px;
    font-size: 35px;
}

.summary p{
    margin-bottom: 20px;
}