XF 2.1 How can i add a animated border with css to an image on an created widget?

[DrWicked]

good evening, i've tried to add an animated border with html+css on an image with bad results, how can add with the correct sequences and link for html and css? Thanks at all!

.box-outer
  .main_box
    .bar.top
    .bar.right.delay
    .bar.bottom.delay
    .bar.left

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
}
body {
    background: #000;
}
.box-outer {
    overflow: hidden;
    margin: 50px auto;
    width: 200px;
    height: 200px;
}
.main_box {
    width: 200px;
    height: 200px;
    position: relative;
    background: #f34c4c;
    border: 5px solid #000;
}
.bar {
    position: absolute;
    width: 50px;
    height: 5px;
    background: #fff;
    transition: all 1s linear;
    -webkit-animation-duration: 1s;
    animation-duration: 1s;
    -webkit-animation-fill-mode: both;
    animation-fill-mode: both;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
}
.bar.delay {
    animation-delay: 0.5s;
    -webkit-animation-delay: 0.5s;
}
.top {
    top: -5px;
    left: -5px;
}
.right {
    top: 18px;
    right: -28px;
    transform: rotate(90deg);
}
.bottom {
    bottom: -5px;
    left: -5px;
}
.left {
    top: 18px;
    left: -28px;
    transform: rotate(90deg);
}
 @-webkit-keyframes h-move {
 0% {
left: -5px;
}
100% {
left: 200px;
}
}
 @keyframes h-move {
 0% {
left: -5px;
}
100% {
left: 200px;
}
}
.top, .bottom {
    -webkit-animation-name: h-move;
    animation-name: h-move;
}
 @-webkit-keyframes v-move {
0% {
top: -5px;
}
100% {
top:228px;
}
}
 @keyframes v-move {
 0% {
top: -5px;
}
100% {
top:228px;
}
}
.right, .left {
    -webkit-animation-name: v-move;
    animation-name: v-move;
}