:target:before {
content:"";
display:block;
height:150px; /* fixed header height*/
margin:-150px 0 0; /* negative fixed header height */
}

html {
  scroll-behavior: smooth;
}


.loader {
  position: absolute;
  top: 50%;
  left: 50%;
  margin: -50px 0 0 -50px;
  -webkit-transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
  border: 16px solid #f3f3f3; /* Light grey */
  border-top: 16px solid #7c5131; /* White */
  border-radius: 50%;
  width: 100px;
  height: 100px;
  animation: spin 2s linear infinite;
 
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}