.btn12 {
    width: 100%;
    overflow: hidden;
    position: relative;
    -webkit-box-shadow: 1px 1px 3px 0 rgba(0, 0, 0, 0.3);
    -moz-box-shadow: 1px 1px 3px 0 rgba(0, 0, 0, 0.3);
    box-shadow: 1px 1px 3px 0 rgba(0, 0, 0, 0.3);
}
.btn12 img {
    width: 100%;
    position: relative;
    top: 0;
    left: 0;
}
.btn12 .ovrly {
    background: rgba(55, 134, 44, 0.75);
    height: 100%;
    left: 0;
    position: absolute;
    top: 0;
    width: 100%;
    opacity: 0;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
}
.btn12 .buttons {
    position: absolute;
    top: 50%;
    left: 50%;
    -webkit-transform: translate(-50%, -50%);
    -moz-transform: translate(-50%, -50%);
    -ms-transform: translate(-50%, -50%);
    -o-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
}
.btn12 .buttons .fa {
    background-color: transparent;
    -webkit-border-radius: 50%;
    -moz-border-radius: 50%;
    border-radius: 50%;
    display: inline-block;
    line-height: 40px;
    font-size: 16px;
    text-align: center;
    text-decoration: none;
    width: 40px;
    height: 40px;
    position: relative;
    -webkit-transition: all 0.3s;
    -moz-transition: all 0.3s;
    -o-transition: all 0.3s;
    transition: all 0.3s;
    color: transparent;
}
.btn12:hover .buttons .fa {
    color:#fff;
   
}
.btn12:hover .ovrly {
    opacity: 1;
}