style.css

/* CSS files add styling rules to your content */

/*gradient*/

body {
    background: linear-gradient(235deg, #000000, #212e20, #000000, #212e20, #000000, #212e20, #000000, #212e20, #000000, #212e20);
    background-size: 2000% 2000%;

    -webkit-animation: AnimationName 41s ease infinite;
    -moz-animation: AnimationName 41s ease infinite;
    animation: AnimationName 41s ease infinite;
}

@-webkit-keyframes AnimationName {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@-moz-keyframes AnimationName {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}
@keyframes AnimationName {
    0%{background-position:0% 50%}
    50%{background-position:100% 50%}
    100%{background-position:0% 50%}
}

body {
  font-family: Consolas, "Roboto Mono", monospace;
  color: #0f3;
  margin: 2em;
  line-height: 150%;
}
/* unvisited link */
a:link {
  color: #0f0;
}

/* visited link */
a:visited {
  color: white;
}

h1 {
  font-style: italic;
  font-weight: 200%;
  color: #fff;
}

#input{
  width: 90%;
  white-space: nowrap;
}
#txt{
  width: 80%;
}
#opt{
  width: 90%;
  white-space: nowrap;
}
#optacc{
  display: inline-block;
  width: 60%;
  
}
#optrate{
  display: inline-block;
  width: 40%;
  white-space: nowrap;
}
#rate{
  width: 50%;
}