body{
    min-width: 640px;
}
.container{
    min-width: 600px;
    width: auto !important;
    width: 600px;
    padding: 40px 20px;
}
header, header h1{
    margin-bottom: 20px;
}
#image-container{
    position: relative;
}
#showcase{
    position: absolute;
    top: 0;
    left: 0;
    display: block;
}
canvas{
    margin-bottom: 10px;
}
.calc, h2, h3{
    font-size: 17px;
    color: #333;
    font-weight: 400;
}
h2 span{
    color: #24a777;
}
.calc label{
    width: 180px;
    display: inline-block;
    text-align: right;
}
#image-container div{
    padding: 20px 0;
}
#image-container div:first-of-type{
    border-bottom: 1px dashed #ccc;
}
#image-container input{
    display: inline-block;
    padding: 6px 4px;
    line-height: 1;
    border: none;
    outline: 3px solid #ccc;
    -webkit-transition: outline 300ms ease-out;
    -moz-transition: outline 300ms ease-out;
    -o-transition: outline 300ms ease-out;
    transition: outline 300ms ease-out;
}
#image-container input:first-of-type{
    margin-bottom: 15px;
}
#image-container input:focus{
    outline: 3px solid #24a777;
}
#file{
   display: inline-block;
   margin: 10px auto 15px;
   font-size: 18px;
   cursor: pointer;
}

@media all and (max-width: 640px){
  footer{
      position: static;
      bottom: 0;
      right: 0;
      width: 640px;
      margin-bottom: 25px;
  }
}