@import url("https://fonts.googleapis.com/css?family=Lato:400,700");
body {
  font-family: "Lato", sans-serif;
  color: #111111;
}

.container_button {
    width: 400px;
    position: fixed;
    top: 80%;
    left: 85%;
}

a {
  text-transform: uppercase;
  text-decoration: none;
  font-weight: 700;
}

@-webkit-keyframes top {
  from {
    -webkit-transform: translate(0rem, 0);
            transform: translate(0rem, 0);
  }
  to {
    -webkit-transform: translate(0rem, 3.5rem);
            transform: translate(0rem, 3.5rem);
  }
}

@keyframes top {
  from {
    -webkit-transform: translate(0rem, 0);
            transform: translate(0rem, 0);
  }
  to {
    -webkit-transform: translate(0rem, 3.5rem);
            transform: translate(0rem, 3.5rem);
  }
}
@-webkit-keyframes bottom {
  from {
    -webkit-transform: translate(-11.5rem, 0);
            transform: translate(-11.5rem, 0);
  }
  to {
    -webkit-transform: translate(0rem, 0);
            transform: translate(0rem, 0);
  }
}
@keyframes bottom {
  from {
    -webkit-transform: translate(-11.5rem, 0);
            transform: translate(-11.5rem, 0);
  }
  to {
    -webkit-transform: translate(0rem, 0);
            transform: translate(0rem, 0);
  }
}
.btn_modal {
  position: relative;
  /*letter-spacing: 0.15em;*/
  margin: 0 auto;
  padding: 1rem 2.5rem;
  background: transparent;
  outline: none;
  font-size: 28px;
  color: #111111;
  -webkit-transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.15s;
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.15s;
}
.btn_modal::after, .btn_modal::before {
  content: "";
  position: absolute;
  height: 40%;
  width: 13%;
  -webkit-transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
  z-index: -2;
  border-radius: 50%;
}
.btn_modal::before {
  background-color: #d28439;
  top: -0.75rem;
  left: 0.5rem;
  -webkit-animation: top 2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.25s infinite alternate;
          animation: top 2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.25s infinite alternate;
}
.btn_modal::after {
  background-color: #D18E4F;
  top: 3rem;
  left: 13rem;
  -webkit-animation: bottom 2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.5s infinite alternate;
          animation: bottom 2s cubic-bezier(0.68, -0.55, 0.265, 1.55) 0.5s infinite alternate;
}
.btn_modal:hover {
  color: white;
}
.btn_modal:hover::before, .btn_modal:hover::after {
  top: 0;
  height: 100%;
  width: 100%;
  border-radius: 0;
  -webkit-animation: none;
          animation: none;
}
.btn_modal:hover::after {
  left: 0rem;
}
.btn_modal:hover::before {
  top: 0.5rem;
  left: 0.35rem;
}