.case-header{
  
   /* margin-left: auto;
   margin-right: auto; */
   width: 100%;
}

.classfy-item{
    width: max-content;
    
    height: 45px;
    font-size: 20px;
    color: #666;
    line-height: 45px;
   
    margin-top: 20px;
    cursor: pointer;
    margin-left: 70px;
   
}
.classfy-item-ac{
    background: rgba(0, 102, 255, 0.1);
    color: #0066FF;
    padding: 0 25px;
}


.app-item {
    width: 314px;
    position: relative;
    cursor: pointer;
    margin-left: 20px;
    margin-bottom: 42px;
}


.app-detail {
    width: 314px;
    height: 179px;
    position: absolute;
    left: 0;
    top: 0;
    background: rgba(0, 0, 0, 0.36);
    visibility: hidden;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-item:hover .app-detail {
    opacity: 1;
    visibility: visible;
}

.app-item:hover .app-btn {
  background: #0066FF;
  color: #FFFFFF;
  border: none;
}

.detail-btn {
    width: 158px;
    height: 58px;
    background: #0066FF;
    border-radius: 29px;
    font-weight: 400;
    font-size: 20px;
    color: #FFFFFF;
    text-align: center;
    line-height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-img {
    width: 314px;
    height: 179px;
}

.app-btn {
    width: 314px;
    height: 60px;
    background: #FFFFFF;
    border: 1px solid #CECECE;
    box-sizing: border-box;
    font-size: 20px;
    color: #000000;
    text-align: center;
    line-height: 60px;
}