#transBox {
  overflow: hidden;
  position:relative;
}


#transBox span:nth-child(1) {

  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to right, #00b5f7, #083972);
  animation: animate1 2s linear infinite;
  -webkit-animation: animate1 2s linear infinite;
}

@keyframes animate1 {
  0% {
    transform: translateX(-100%);
    -webkit-transform: translateX(-100%);
    -moz-transform: translateX(-100%);
    -ms-transform: translateX(-100%);
    -o-transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
    -webkit-transform: translateX(100%);
    -moz-transform: translateX(100%);
    -ms-transform: translateX(100%);
    -o-transform: translateX(100%);
  }
}

#transBox span:nth-child(2) {
  position: absolute;
  top: 0;
  right: 0;
  width: 6px;
  height: 100%;
  background: linear-gradient(to bottom, #00b5f7, #083972);
  animation: animate2 2s linear infinite;
  -webkit-animation: animate2 2s linear infinite;
  /* add delay to have continuity on effect*/
  animation-delay: 1s;
}

@keyframes animate2 {
  0% {
    transform: translateY(-100%);
    -webkit-transform: translateY(-100%);
    -moz-transform: translateY(-100%);
    -ms-transform: translateY(-100%);
    -o-transform: translateY(-100%);
  }
  100% {
    transform: translateY(100%);
    -webkit-transform: translateX(100%);
    -moz-transform: translateX(100%);
    -ms-transform: translateX(100%);
    -o-transform: translateX(100%);
  }
}

#transBox span:nth-child(3) {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(to left, #00b5f7, #083972);
  animation: animate3 2s linear infinite;
  -webkit-animation: animate3 2s linear infinite;
}

@keyframes animate3 {
  0% {
    transform: translateX(100%);
    -webkit-transform: translateX(100%);
    -moz-transform: translateX(100%);
    -ms-transform: translateX(100%);
    -o-transform: translateX(100%);
  }
  100% {
    transform: translateX(-100%);
    -webkit-transform: translateX(-100%);
    -moz-transform: translateX(-100%);
    -ms-transform: translateX(-100%);
    -o-transform: translateX(-100%);
  }
}

#transBox span:nth-child(4) {
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(to top, #00b5f7, #083972);
  animation: animate4 2s linear infinite;
  -webkit-animation: animate4 2s linear infinite;
  /* add delay to have continuity on effect*/
  animation-delay: 1s;
}

@keyframes animate4 {
  0% {
    transform: translateY(100%);
    -webkit-transform: translateY(100%);
    -moz-transform: translateY(100%);
    -ms-transform: translateY(100%);
    -o-transform: translateY(100%);
  }
  100% {
    transform: translateY(-100%);
    -webkit-transform: translateY(-100%);
    -moz-transform: translateY(-100%);
    -ms-transform: translateY(-100%);
    -o-transform: translateY(-100%);
  }
}