body {
  background: #fff;
  font-family: "Kodchasan", sans-serif;
}

.content {
  max-width: 756px;
  margin: auto;
  background: white;
  padding: 10px;
  box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
}

.back-to-top {
  background: #fff;
  position: fixed;
  bottom:200px;
  right: 0px;
  padding: 1.0em;
  font-size: 1.2rem;
  font-weight: 600;
  z-index: 100;
  color: #000;
  border-top: 1px solid #B6D6DF;
  border-left: 1px solid #B6D6DF;
  border-bottom: 1px solid #B6D6DF;
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
  box-shadow: rgba(0, 0, 0, 0.25) 0px 54px 55px, rgba(0, 0, 0, 0.12) 0px -12px 30px, rgba(0, 0, 0, 0.12) 0px 4px 6px, rgba(0, 0, 0, 0.17) 0px 12px 13px, rgba(0, 0, 0, 0.09) 0px -3px 5px;
}

@media screen and (max-width: 960px) {
  .back-to-top{
  position: fixed;
  bottom:150px;
  right: 0px;
  padding: 1em;
  z-index: 100;
  font-size: 1.2rem;
  background: #fff;
  color: #000;
  border-top: 1px solid #B6D6DF;
  border-left: 1px solid #B6D6DF;
  border-bottom: 1px solid #B6D6DF;
  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;
  }
}

.btn {
  background-color: #343148;
  font-family: "Kodchasan", sans-serif;
  border: none;
  color: white;
  margin-bottom: 40px;
  padding: 12px 30px;
  cursor: pointer;
  font-size: 20px;
}

a{
color: #000;
text-decoration: none;
}

/* width */
::-webkit-scrollbar {
  scrollbar-width: none;
  display: none;
  overflow: hidden;
}