html {
  overflow: hidden;
  text-size-adjust: 100%;
}
html,
body {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;

  &.color-weak {
    filter: invert(80%);
  }

  &.gray-mode {
    filter: grayscale(100%);
    filter: progid:dximagetransform.microsoft.basicimage(grayscale=1);
  }
}

a:focus,
a:active,
button,
div,
svg,
span {
  outline: none;
}
ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, h5 {
  margin-bottom: 0 !important;
  line-height: normal;
}
div{
  line-height: normal;
}