@import url("https://fonts.googleapis.com/css?family=Montserrat:300,400,500,700");
@import url("https://fonts.googleapis.com/css?family=Oswald:300,400,500,700");

html {
    margin-left: calc(100vw - 100%);
    margin-right: 0;
    min-width:600px;
}

::-webkit-scrollbar {
  width: 1px;
}

body {
    font-family: Montserrat;
    font-size: 20px;
    background-color: rgba(100, 100, 100, .4);
    margin: 0px;
}

h1 {
    margin-top: 25px;
    font-size: 40px;
    font-weight: 100;
    text-color: white;
    text-align: center;
}

h2 {
    font-size: 50px;
    font-weight: 100;
    text-align: center;
    margin-top: 0px;
}

h3 {
    font-size: 30px;
    font-weight: 100;
    text-color: white;
    text-align: center;
}

p {
    text-align: center;
    font-size: 25px;
    font-weight: 300;
    margin-bottom:10px;
    font-color: rgba(0,0,0,.4);
    font-family: Oswald;
}

button {
    background-color: #e7e7e7; 
    color: black;
    text-align: center;
    text-decoration: none;
    font-size: 16px;
    margin: 4px 2px;
    cursor: pointer;
    border-radius:10px;
    padding: 15px 32px;
}

* {
  box-sizing: border-box;
}

form {
  padding: 1em;
  background: #f9f9f9;
  border: 1px solid #c1c1c1;
  margin-top: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  padding: 1em;
  animation: .6s slide-up;
  margin-top:0%;
}

@keyframes slide-up {
  from {
    margin-top: 100%;
  }

  to {
    margin-top: 0%;
  }
}

form input {
  margin-bottom: 1rem;
  background: #fff;
  border: 1px solid #9c9c9c;
}
form button {
  background: lightgrey;
  padding: 0.7em;
  border: 0;
}
form button:hover {
  background: gold;
}

label {
  text-align: right;
  display: block;
  padding: 0.5em 1.5em 0.5em 0;
}

input {
  width: 100%;
  padding: 0.7em;
  margin-bottom: 0.5rem;
}
input:focus {
  outline: 3px solid gold;
}

.main {
    #margin-top: 100px;
}

.calculator {
    margin-top: 100px;
}

.top-buttons {
    margin-top: 50px;
}

.semester {
    padding-left:10px;
    padding-right:10px;
}

.calculate-button {
    margin-top: 20px;
}

.calculated-gpa {
    margin-top: 20px;
    font-size: 40px;
    margin-bottom: 40px;
}

.calculated-credits {
    margin-top: 20px;
    font-size: 30px;
    margin-bottom: 40px;
}

.courses {
    display:inline-grid;
}

@media (min-width: 350px) {
    .courses {
        grid-template-columns:300px;
    }
}

@media (min-width: 650px) {
    .courses {
        grid-template-columns:300px 300px;
    }
}

@media (min-width: 950px) {
    .courses {
        grid-template-columns:300px 300px 300px;
    }
}

@media (min-width: 1250px) {
    .courses {
        grid-template-columns:300px 300px 300px 300px;
    }
}

@media (min-width: 400px) {
  form {
    overflow: hidden;
  }

  label {
    float: left;
    width: 200px;
  }

  input {
    float: left;
    width: calc(100% - 200px);
  }

  form button {
    float: right;
    width: calc(100% - 200px);
  }
}

.links {
    width: 100%;
    margin-top:100px;
    text-align: center;
}

a {
    color: rgba(0, 0, 0, 0.7);
    display: block;
    text-decoration: none;
    margin: 0 auto;
    width: 100px;
}

.links a {
    margin-left: auto;
    margin-right: auto;
    margin-top:5px;
    width: 200px;
    font-size: 20px;
    text-decoration: none;
    color: rgba(0,0,0,.7);
    display: block;
}

.ps-top-to-bottom {
    position: relative;
    border-top: 8px solid black;
}
.ps-top-to-bottom:before, .ps-top-to-bottom:after {
    content: "";
    position: absolute;
    background-image: -webkit-gradient(linear, 0 0, 0 500, from(#000), to(transparent));
    top: 0px;
    bottom: 0px;
    width: 8px;
}
.ps-top-to-bottom:before {
    left: 0px;
}
.ps-top-to-bottom:after {
    right: 0px;
}

.rainbow {
   /* Chrome, Safari, Opera */
  -webkit-animation: rainbow 3s infinite;

  /* Internet Explorer */
  -ms-animation: rainbow 3s infinite;

  /* Standar Syntax */
  animation: rainbow 3s infinite;
}

/* Chrome, Safari, Opera */
@-webkit-keyframes rainbow{
    0%{color: orange;}
    10%{color: purple;}
    20%{color: red;}
    40%{color: yellow;}
    60%{color: green;}
    100%{color: blue;}
    100%{color: orange;}
}
/* Internet Explorer */
@-ms-keyframes rainbow{
    0%{color: orange;}
    10%{color: purple;}
    20%{color: red;}
    40%{color: yellow;}
    60%{color: green;}
    100%{color: blue;}
    100%{color: orange;}
}

/* Standar Syntax */
@keyframes rainbow{
    0%{color: orange;}
    10%{color: purple;}
    20%{color: red;}
    40%{color: yellow;}
    60%{color: green;}
    100%{color: blue;}
    100%{color: orange;}
}

.lucky {
    background: url(http://stash.rachelnabors.com/animation-workshop/sprite_catwalk.png) 0 0 no-repeat; 
    transform:translateY(200%);
    zoom:40%;
    height: 200px;
    width: 400px;
    margin: 100px auto 0;
    margin-bottom: 600px;
    animation: walk-cycle steps(11) infinite 1.5s;
}
@keyframes walk-cycle {
    0% {
        background-position: 0 0;
    } 
    100% {
        background-position: 0 100%;
    }
}