button{
  outline: none;
  border: none;
  background: inherit;
  max-width: 100%;
}
.bt-1{
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  background: #668ad8;/*Button Color*/
  color: #FFF;
  border-bottom: solid 4px #627295;
  border-radius: 3px;
}
.bt-1:active {/*on Click*/
  -ms-transform: translateY(4px);
  -webkit-transform: translateY(4px);
  transform: translateY(4px);/*Move down*/
  border-bottom: none;/*disappears*/
}
.bt-2{
  display: inline-block;
  position: relative;
  padding: 0.5em 1.4em;
  text-decoration: none;
  background: #668ad8;/*Button Color*/
  color: #FFF;
  border-bottom: solid 5px #36528c;/*daker than background*/
  border-right: solid 5px #5375bd;/*darker than background*/
}

.bt-2:before{
  content: " ";
  position: absolute;
  bottom: -5px;
  left: -1px;
  width: 0;
  height: 0;
  border-width: 0 6px 6px 0px;
  border-style: solid;
  border-color: transparent;
  border-bottom-color: #FFF;
}

.bt-2:after{
  content: " ";
  position: absolute;
  top: -1px;
  right: -5px;
  width: 0;
  height: 0;
  border-width: 0px 6px 6px 0px;
  border-style: solid;
  border-color: #FFF;
  border-bottom-color: transparent;
}

.bt-2:active{ /*on click*/
  border:none;
  -ms-transform: translate(6px,6px);
  -webkit-transform: translate(6px,6px);
  transform: translate(6px,6px);/*move LowerRight*/
}

.bt-2:active:after,
.bt-2:active:before {/*on click*/
  content: none;/*Border disappears*/
}
.bt-3 {
  position: relative;
  display: inline-block;
  padding: 0.25em 0.5em;
  text-decoration: none;
  color: #FFF;
  background: #fd9535;/*button color*/
  border-bottom: solid 2px #d27d00;/*daker color*/
  border-radius: 4px;
  box-shadow: inset 0 2px 0 rgba(255,255,255,0.2), 0 2px 2px rgba(0, 0, 0, 0.19);
  font-weight: bold;
}

.bt-3:active {
  border-bottom: solid 2px #fd9535;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.30);
}
.bt-4 {
  position: relative;
  display: inline-block;
  padding: 0.25em 0.5em;
  text-decoration: none;
  color: #FFF;
  background: #03A9F4;
  border: solid 1px #0f9ada;
  border-radius: 4px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2);
  text-shadow: 0 1px 0 rgba(0,0,0,0.2);
}

.bt-4:active {/*onClick*/
  border: solid 1px #03A9F4;
  box-shadow: none;
  text-shadow: none;
}
.bt-5{
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  background: #f7f7f7;
  border-left: solid 6px #ff7c5c;
  color: #ff7c5c;
  font-weight: bold;
  box-shadow: 0px 2px 2px rgba(0, 0, 0, 0.29);
}
.bt-5:active {
  box-shadow: inset 0 0 2px rgba(128, 128, 128, 0.1);
  transform: translateY(2px);
}
.bt-6 {
  display: inline-block;
  padding: 0.3em 1em;
  text-decoration: none;
  color: #67c5ff;
  border: solid 2px #67c5ff;
  border-radius: 3px;
  transition: .4s;
}

.bt-6:hover {
  background: #67c5ff;
  color: white;
}
.bt-7 {
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  color: #67c5ff;
  border: double 4px #67c5ff;
  border-radius: 3px;
  transition: .4s;
}
.bt-7:hover {
  background: #fffbef;
}
.bt-8{
  display: inline-block;
  padding: 0.5em 1em;
  text-decoration: none;
  color: #67c5ff;
  border: dashed 1px #67c5ff;
  background: #f2fcff;
  border-radius: 3px;
  transition: .4s;
}

.bt-8:hover {
  background: #cbedff;
  color: #FFF;
}
.bt-9{
  position: relative;
  display: inline-block;
  font-weight: bold;
  padding: 0.5em 1em;
  text-decoration: none;
  border-left: solid 4px #668ad8;
  border-right: solid 4px #668ad8;
  color: #668ad8;
  background: #e1f3ff;
  transition: .4s;
}

.bt-9:hover {
  background: #668ad8;
  color: #FFF;
}
.bt-10{
  position: relative;
  display: inline-block;
  font-weight: bold;
  padding: 0.25em 0;
  text-decoration: none;
  color: #67c5ff;
}

.bt-10:before{
  position: absolute;
  content: '';
  width: 100%;
  height: 4px;
  top:100%;
  left: 0;
  border-radius: 3px;
  background:#67c5ff;
  transition: .2s;
}

.bt-10:hover:before {
   top: -webkit-calc(100% - 3px);
   top: calc(100% - 3px);
}