body {
    background-image: url(https://files.123freevectors.com/wp-content/original/131329-abstract-green-and-white-low-poly-background.jpg);
}
h1 {
    text-align: center;
    font-weight: bolder;
    font-size: xx-large;
}
.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
  }

  .centeralign {
    text-align: center;
  }
  .howtouse {
    text-align: center;
    font-weight: bolder;
    font-size: 25px;
  }

.button-33 {
  background-color: #c2fbd7;
  border-radius: 100px;
  box-shadow: rgba(44, 187, 99, .2) 0 -25px 18px -14px inset,rgba(44, 187, 99, .15) 0 1px 2px,rgba(44, 187, 99, .15) 0 2px 4px,rgba(44, 187, 99, .15) 0 4px 8px,rgba(44, 187, 99, .15) 0 8px 16px,rgba(44, 187, 99, .15) 0 16px 32px;
  color: green;
  cursor: pointer;
  display: inline-block;
  font-family: CerebriSans-Regular,-apple-system,system-ui,Roboto,sans-serif;
  padding: 7px 20px;
  text-align: center;
  text-decoration: none;
  transition: all 250ms;
  border: 0;
  font-size: 16px;
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  text-align: center;
}

.button-33:hover {
  box-shadow: rgba(44,187,99,.35) 0 -25px 18px -14px inset,rgba(44,187,99,.25) 0 1px 2px,rgba(44,187,99,.25) 0 2px 4px,rgba(44,187,99,.25) 0 4px 8px,rgba(44,187,99,.25) 0 8px 16px,rgba(44,187,99,.25) 0 16px 32px;
  transform: scale(1.05) rotate(-1deg);
  text-align: center;
}
a{
    text-align: center;
}
.cr{
    text-align: center;
}