button {

background-color: #2B60DE;
font-size: 110%;
border: 0;
padding: 7px 14px;
color: white;
text-transform: uppercase;
border: #0020C2 2px solid;
box-shadow: 0px 0px 2px 0 lightblue;

}

button:hover {

background-color: black;
border: white 2px solid;
transition: 1s ease-in;
color: white;

}

/* animated scroll down button */ .down {

a {
  position: absolute;
  left: 50%;
  z-index: 2;
  display: inline-block;
  -webkit-transform: translate(0, -50%);
  transform: translate(0, -50%);
  text-decoration: none;
  padding-top: 60px;
  color: #fff;
  -webkit-transition: opacity .5s;
  -o-transition: opacity .5s;
  transition: opacity .5s;
}

a:hover {
  opacity: .5;
}

a span {
  position: absolute;
  width: 46px;
  height: 46px;
  top: 10vh;
  margin-left: -23px;
  border: 1px solid #fff;
  border-radius: 100%;
  box-sizing: border-box;
}

a span::after {
  position: absolute;
  top: 50%;
  left: 50%;
  content: '';
  width: 16px;
  height: 16px;
  margin: -12px 0 0 -8px;
  border-left: 1px solid #fff;
  border-bottom: 1px solid #fff;
  -webkit-transform: rotate(-45deg);
  transform: rotate(-45deg);
  box-sizing: border-box;
}

a span::before {
  position: absolute;
  top: 0;
  left: 0;
  z-index: -1;
  content: '';
  width: 44px;
  height: 44px;
  box-shadow: 0 0 0 0 rgba(255, 255, 255, .1);
  border-radius: 100%;
  opacity: 0;
  -webkit-animation: sdb 3s infinite;
  animation: sdb 3s infinite;
  box-sizing: border-box;
}

@-webkit-keyframes sdb {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  60% {
    box-shadow: 0 0 0 60px rgba(255, 255, 255, .1);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

@keyframes sdb {
  0% {
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  60% {
    box-shadow: 0 0 0 60px rgba(255, 255, 255, .1);
    opacity: 0;
  }
  100% {
    opacity: 0;
  }
}

}