/* font-family:-apple-system, BlinkMacSystemFont, "Segoe UI", Robot, Oxygen,
    Ubuntu, Camtarell, "Open Sans", "Helvetica Neue", sans-serif; */
@import url("https://fonts.googleapis.com/css?family=Open+Sans:400,600");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

a {
  display: block;
  text-decoration: none;
  color: inherit;
  /* background: tomato; */
  /* padding: 20px; */
  /* margin: 20px; */
}

body {
  display: flex;
  justify-content: center;
  align-items: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Robot, Oxygen,
    Ubuntu, Camtarell, "Open Sans", "Helvetica Neue", sans-serif;
}

.back {
  width: 200px;
  height: 50px;
  float: left;
  background-color: #eeeeee;
  border: 10px;
  border-color: #ffffff;
  border-style: solid;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  counter-increment: bc;
  padding: 0px 5px 5px 5px;
  margin-right: 10px;
}

.back:before {
  content: counter(bc) "_";
  position: absolute;
  padding: 10px;
}

.button_base {
  margin: 0;
  border: 0;
  font-size: 18px;
  position: relative;
  top: 50%;
  left: 50%;
  margin-top: -25px;
  margin-left: -100px;
  width: 200px;
  height: 50px;
  text-align: center;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  -webkit-user-select: none;
  cursor: default;
}

.button_base:hover {
  cursor: pointer;
}

.b03_skewed_slide_in {
  overflow: hidden;
  border: #000000 solid 1px;
}

.b03_skewed_slide_in div {
  position: absolute;
  text-align: center;
  width: 100%;
  height: 50px;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  padding: 10px;
}

.b03_skewed_slide_in div:nth-child(1) {
  color: #fff;
  background-color: #6138f6;
}

.b03_skewed_slide_in div:nth-child(2) {
  opacity: 0.5;
  background-color: #fff;
  width: 30px;
  transition: all 0.2s ease;
  -webkit-transition: all 0.2s ease;
  -moz-transition: all 0.2s ease;
  transform: translate(-250px, 0px) skewX(-30deg);
  -webkit-transform: translate(-164%, 0px) skewX(-30deg);
  -moz-transform: translate(-250px, 0px) skewX(-30deg);
}

.b03_skewed_slide_in:hover div:nth-child(2) {
  transition: all 0.5s ease;
  width: 80px;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  transform: translate(-15px, 0px) skewX(-30deg);
  -webkit-transform: translate(213px, 0px) skewX(-30deg);
  -moz-transform: translate(-15px, 0px) skewX(-30deg);
}


.b03_skewed_slide_in div:nth-child(3) {
  color: #000;
  left: -200px;
  transition: left 0.2s ease;
  -webkit-transition: left 0.2s ease;
  -moz-transition: left 0.2s ease;
}

.b03_skewed_slide_in:hover div:nth-child(3) {
  left: 0px;
  transition: left 0.30000000000000004s ease;
  -webkit-transition: left 0.30000000000000004s ease;
  -moz-transition: left 0.30000000000000004s ease;
}



/* 04 button */
.b04_skewed_slide_in {
  overflow: hidden;
  border: #000000 solid 1px;
}

.b04_skewed_slide_in div {
  position: absolute;
  text-align: center;
  width: 100%;
  height: 50px;
  box-sizing: border-box;
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  padding: 10px;
}

.b04_skewed_slide_in div:nth-child(1) {
  color: #000000;
  background-color: #ffffff;
}

.b04_skewed_slide_in div:nth-child(2) {
  background-color: #000000;
  width: 230px;
  transition: all 0.2s ease;
  -webkit-transition: all 0.2s ease;
  -moz-transition: all 0.2s ease;
  transform: translate(-250px, 0px) skewX(-30deg);
  -webkit-transform: translate(-250px, 0px) skewX(-30deg);
  -moz-transform: translate(-250px, 0px) skewX(-30deg);
}

.b04_skewed_slide_in div:nth-child(3) {
  color: #ffffff;
  left: -200px;
  transition: left 0.2s ease;
  -webkit-transition: left 0.2s ease;
  -moz-transition: left 0.2s ease;
}

.b04_skewed_slide_in:hover div:nth-child(2) {
  transition: all 0.5s ease;
  -webkit-transition: all 0.5s ease;
  -moz-transition: all 0.5s ease;
  transform: translate(-15px, 0px) skewX(-30deg);
  -webkit-transform: translate(-15px, 0px) skewX(-30deg);
  -moz-transform: translate(-15px, 0px) skewX(-30deg);
}

.b04_skewed_slide_in:hover div:nth-child(3) {
  left: 0px;
  transition: left 0.30000000000000004s ease;
  -webkit-transition: left 0.30000000000000004s ease;
  -moz-transition: left 0.30000000000000004s ease;
}


.b05_skewed_slide_in {
  color: #fff;
  /* transition: 1s; */
  background: #b92b27;
  /* fallback for old browsers */
  background: -webkit-linear-gradient(to right, #1565C0, #b92b27);
  /* Chrome 10-25, Safari 5.1-6 */
  background-image: linear-gradient(to right, #1565C0, #b92b27);
  /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */

  background-image: linear-gradient(
    to right,
    #f37734 0%,
    #f9c331 51%,
    #f37734 100%
  );
  transition: 0.5s ease-in-out;
  background-size: 200%;
}

.b05_skewed_slide_in:hover {
  background-size: 5%;
  /* background-position: right center; */
  /* animation: backgrounsChange 0.5s ease-in-out; */
}

.b05_skewed_slide_in div {
  width: 200px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* @keyframes backgrounsChange {
  0% {
    background: linear-gradient(to right, #1565C0, #b92b27);
  }
  100% {
    background: linear-gradient(to right, #b92b27, #1565C0);
  }
} */

/* @keyframes test {
  0% {transform: scale(1)}
  100%{transform: scale(1.3)}
} */