*{
    border: 0;
    padding: 0;
    margin: 0;
}
.main{
    height: auto;
    border: 1px solid rgba(0, 0, 0, 0.0);
}
/* 右半部分选项 */
.main-right{
    width: 70%;
    margin-top: 110px;
}

.main-right-item{
    height: 30vw;
    margin: 1.6%;
    background-color: #e7f0ef;
    padding: 30px 0 0 0;
    position: relative;
    box-shadow: 0 0 10px 5px rgba(0, 0, 0, 0.0);
    transition: box-shadow 0.5s linear;
}
.main-right-item:hover{
    box-shadow: 0 0 10px 5px rgba(0, 0, 0, 0.3);
}


.main-right-img{
    width: 90%;
    height:auto;
    overflow: hidden;
    margin: 0 auto;
}
.main-right-img img{
    width:100%;
}
.main-right-title{
    margin-top: 15%;
    text-align: center;
    transition: margin-top 0.5s linear;
}
.main-right-item:hover .main-right-title{
   margin-top: 10%;
}



.main-right-btn{
    position: absolute;
    top:80%;
    left:25%;
    width: 50%;
    height: auto;
    padding:7px 3px;
    background-color: red;
    text-align: center;
    opacity: 0;
    transition: opacity 0.5s linear,top 0.5s linear;
}
.main-right-btn button{
    background-color: red;
    color: white;
}
.main-right-item:hover .main-right-btn{
    opacity: 1;
    top: 85%;
}
.main-right-title p{
    font-size: 1.2vw;
}
.main-right-btn a{
    font-size: 1.2vw;
}

@media screen and (max-width: 767px){
    .main-right-item{
        height: 70vw;
    }
    .main-right-img{
        width: 50%;
    }
    .main-right-title p{
        font-size: 5vw;
}
    .main-right-btn a{
        font-size: 5vw;
    }
}