.login-back {
  width: 100%;
  position: absolute;
  top: 0;
  bottom: 0;
}

.login-center {
  width: 400px;
  height: 400px;
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  margin: auto;
  max-width: 100%;
  max-height: 100%;
  overflow: auto;
  display: table;
}

i.zoom-in {
    font-size: 48px;
}

@media screen and (max-width: 767px) {
    /*
    .offcanvas {
        background: rgba(40, 40, 40, .8);
        width: 300px;
        height: 450px
    } 
    */
    .blog {
        /*
        height: 280px; 
        overflow-y: hidden;
        */
        margin-bottom: 20px;
    }
}