html-css-javascript-online-editor-compiler

@import url(https://fonts.googleapis.com/css?family=Open+Sans);
body{
    background-color: #000;
    text-align: center;
    min-height: 270px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: "Open Sans";
}

.btn-border {
  position: relative;
  padding: 20px 30px;
  border: none;
  background-color: transparent;
  cursor: pointer;
  outline: none;
  font-size: 18px;
  margin: 20px;
  text-decoration: none;
}
.btn-border.design1 {
  color: #fff;
}
.btn-border.design1.design1::after, .btn-border.design1.design1::before {
  content: "";
  display: block;
  position: absolute;
  width: 20%;
  height: 30%;
  border: 2px solid;
  transition: all 0.6s ease;
  border-radius: 2px;
}
.btn-border.design1.design1::after {
  bottom: 0;
  right: 0;
  border-top-color: transparent;
  border-left-color: transparent;
  border-bottom-color: #fff;
  border-right-color: #fff;
}
.btn-border.design1.design1::before {
  top: 0;
  left: 0;
  border-bottom-color: transparent;
  border-right-color: transparent;
  border-top-color: #fff;
  border-left-color: #fff;
}
.btn-border.design1.design1:hover:after, .btn-border.design1.design1:hover:before {
  width: calc(100% - 3px);
  height: calc(100% - 4px);
}
.btn-border.design2 {
  color: #fff;
}
.btn-border.design2.design2::after, .btn-border.design2.design2::before {
  content: "";
  display: block;
  position: absolute;
  width: 20%;
  height: 30%;
  border: 2px solid;
  transition: all 0.6s ease;
  border-radius: 2px;
}
.btn-border.design2.design2::after {
  bottom: 0;
  right: 0;
  border-top-color: transparent;
  border-left-color: transparent;
  border-bottom-color: #fff;
  border-right-color: #fff;
}
.btn-border.design2.design2::before {
  top: 0;
  left: 0;
  border-bottom-color: transparent;
  border-right-color: transparent;
  border-top-color: #fff;
  border-left-color: #fff;
}
.btn-border.design2.design2:hover:after, .btn-border.design2.design2:hover:before {
  border-bottom-color: #fff;
  border-right-color: #fff;
  border-top-color: #fff;
  border-left-color: #fff;
  width: 105%;
  height: 110%;
}
.btn-border.design3 {
  color: #fff;
}
.btn-border.design3::before {
  content: "";
  display: block;
  position: absolute;
  height: 2px;
  width: 0;
  right: 0;
  background-color: #fff;
  transition: width 0.3s ease-in-out;
}
.btn-border.design3::before {
  top: 0;
}
.btn-border.design3:hover::before {
  width: 50%;
}
.btn-border.design3::after {
  content: "";
  display: block;
  position: absolute;
  height: 2px;
  width: 0;
  left: 0;
  background-color: #fff;
  transition: width 0.3s ease-in-out;
}
.btn-border.design3::after {
  bottom: 0;
}
.btn-border.design3:hover::after {
  width: 50%;
}

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