.box{
    text-align: center;
    box-shadow: 0 0 3px rgba(0,0,0,0.3);
    overflow: hidden;
    position: relative;
}

.box img{
    width: 100%;
    height: auto;
}

.box .box-content{
    width: 100%;
    height: 100%;
    padding: 25% 10px 0;
    color: #fff;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    z-index: 1;
    transition: all 0.5s ease 0s;
}

.box:hover .box-content{ opacity: 1; }

.box:before,
.box:after,
.box-content:before,
.box-content:after{
    content: "";
    width: 50%;
    height: 50%;
    background-color: rgba(0,0,0,0.7);
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: all 0.3s ease 0s;
}

.box:after,
.box-content:after{
    left: auto;
    right: 0;
}

.box:before{
    transform: rotate(-90deg);
    transform-origin: right bottom;
}

.box:after{
    transform: rotate(90deg);
    transform-origin: left bottom;
}

.box-content:before,
.box-content:after{
    top: auto;
    bottom:0;
    z-index: -1;
}

.box-content:before{
    transform: rotate(90deg);
    transform-origin: top right;
}

.box-content:after{
    transform: rotate(-90deg);
    transform-origin: top left;
}

.box:hover:before,
.box:hover:after,
.box:hover .box-content:before,
.box:hover .box-content:after{
    transform: rotate(0);
    opacity: 1;
}

.box .title{
    font-size: 25px;
    font-weight: 600;
    margin: 0 0 10px 0;
}

.box .post{
    display: block;
    font-size: 14px;
    font-style: italic;
    margin-bottom: 20px;
}

.box .icon{
    padding: 0;
    margin: 0;
    list-style: none;
}

.box .icon li{
    display: inline-block;
    margin-right: 10px;
}

.box .icon li a{
    display: block;
    width: 33px;
    height: 33px;
    line-height: 33px;
    background: #fff;
    border-radius: 10px;
    font-size: 16px;
    color: #1da1f2;
    transition: all 0.5s ease 0s;
}

.box .icon li a:hover{
    background: #1da1f2;
    border-radius: 50%;
    color: #fff;
}

@media only screen and (max-width:990px){
    .box{ margin-bottom: 30px; }
}