html,
body {
	height: 100%;
}

.app {
  height: 100%;
  overflow: auto;
}

.row {
 	display: -webkit-flex;
    display: -ms-flexbox;
    display: flex;
    -webkit-flex-wrap: wrap;
    -ms-flex-wrap: wrap;
    flex-wrap: wrap;
}

.col {
  display: grid;
  justify-content: center;
  align-content: center;
  padding: 10px;
  margin: 15px;
  flex-grow: 1;
  min-height: 15vh;
  transition: 0.5s all ease;
  
  @media (min-width: 0px) {
    @for $i from 1 through 12 {
      &.col-#{$i} {
        flex-grow: 0;
        flex-basis: calc(-30px + 100% *#{$i}* 1/12);
      }
    }
  }
  
  @media (min-width: 576px) {
    @for $i from 1 through 12 {
      &.col-sm-#{$i} {
        flex-grow: 0;
        flex-basis: calc(-30px + 100% *#{$i}* 1/12);
      }
    }
  }
  
  @media (min-width: 768px) {
    @for $i from 1 through 12 {
      &.col-md-#{$i} {
        flex-grow: 0;
        flex-basis: calc(-30px + 100% *#{$i}* 1/12);
      }
    }
  }
  
  @media (min-width: 992px) {
    @for $i from 1 through 12 {
      &.col-lg-#{$i} {
        flex-grow: 0;
        flex-basis: calc(-30px + 100% *#{$i}* 1/12);
      }
    }
  }
  
  @media (min-width: 1200px) {
    @for $i from 1 through 12 {
      &.col-xl-#{$i} {
        flex-grow: 0;
        flex-basis: calc(-30px + 100% *#{$i}* 1/12);
      }
    }
  }
  
}

.btn {
    display: inline-block;
    font-weight: 400;
    color: #212529;
    text-align: center;
    vertical-align: middle;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    background-color: transparent;
    border: 1px solid transparent;
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: 0.25rem;
    transition: color .15s ease-in-out,background-color .15s ease-in-out,border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

.btn-default {
    background-color: #f8f9fa;
    border-color: #ddd;
    color: #444;
}

.form-control {
    display: block;
    width: 100%;
    height: calc(2.25rem + 2px);
    padding: 0.375rem 0.75rem;
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.5;
    color: #495057;
    background-color: #fff;
    background-clip: padding-box;
    border: 1px solid #ced4da;
    border-radius: 0.25rem;
    box-shadow: inset 0 0 0 transparent;
    transition: border-color .15s ease-in-out,box-shadow .15s ease-in-out;
}

.form-group {
    margin-top: 0.5rem;
    margin-bottom: 0.5rem;
}