.mobile-btn {
  position: relative;
  background: #2b2b2b;
  color: #dccb9b;
  border: 1px solid #676551;
  width: 140px;
  height: 40px;
  font-family: 'Montserrat', Arial, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  cursor: pointer;
  display: inline-block;
  overflow: visible;
  z-index: 1;
  -webkit-tap-highlight-color: transparent;
}

/* TOP line */
.mobile-btn::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: calc(100% + 2px);
  height: 1px;
  background: #BEAB81;
}

/* LEFT line */
.mobile-btn::after {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  width: 1px;
  height: calc(100% + 2px);
  background: #BEAB81;
}

/* BOTTOM line */
.mobile-btn .br-corner-h {
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: calc(100% + 2px);
  height: 1px;
  background: #BEAB81;
}

/* RIGHT line */
.mobile-btn .br-corner-v {
  position: absolute;
  right: -1px;
  bottom: -1px;
  width: 1px;
  height: calc(100% + 2px);
  background: #BEAB81;
}

/* Press feedback */
.mobile-btn:active { 
  color: #a6764b; 
}
.mobile-btn:active::before,
.mobile-btn:active::after,
.mobile-btn:active .br-corner-h,
.mobile-btn:active .br-corner-v {
  background: #a6764b;
}