bootstrap-float-label.min.css

.has-float-label{display:block;position:relative}.has-float-label label,.has-float-label>span{position:absolute;cursor:text;font-size:75%;opacity:1;-webkit-transition:all .2s;transition:all .2s;top:-.5em;left:.75rem;z-index:3;line-height:1;padding:0 1px}.has-float-label label::after,.has-float-label>span::after{content:" ";display:block;position:absolute;background:#fff;height:2px;top:50%;left:-.2em;right:-.2em;z-index:-1}.has-float-label .form-control::-webkit-input-placeholder{opacity:1;-webkit-transition:all .2s;transition:all .2s}.has-float-label .form-control::-moz-placeholder{opacity:1;transition:all .2s}.has-float-label .form-control:-ms-input-placeholder{opacity:1;transition:all .2s}.has-float-label .form-control::placeholder{opacity:1;-webkit-transition:all .2s;transition:all .2s}.has-float-label .form-control:placeholder-shown:not(:focus)::-webkit-input-placeholder{opacity:0}.has-float-label .form-control:placeholder-shown:not(:focus)::-moz-placeholder{opacity:0}.has-float-label .form-control:placeholder-shown:not(:focus):-ms-input-placeholder{opacity:0}.has-float-label .form-control:placeholder-shown:not(:focus)::placeholder{opacity:0}.has-float-label .form-control:placeholder-shown:not(:focus)+*{font-size:150%;opacity:.5;top:.3em}.input-group .has-float-label{-webkit-box-flex:1;-webkit-flex-grow:1;-ms-flex-positive:1;flex-grow:1;margin-bottom:0;display:-webkit-box;display:-webkit-flex;display:-ms-flexbox;display:flex;-webkit-box-orient:vertical;-webkit-box-direction:normal;-webkit-flex-direction:column;-ms-flex-direction:column;flex-direction:column;-webkit-box-pack:center;-webkit-justify-content:center;-ms-flex-pack:center;justify-content:center}.input-group .has-float-label .form-control{width:100%;border-radius:.25rem}.input-group .has-float-label:not(:last-child),.input-group .has-float-label:not(:last-child) .form-control{border-bottom-right-radius:0;border-top-right-radius:0;border-right:0}.input-group .has-float-label:not(:first-child),.input-group .has-float-label:not(:first-child) .form-control{border-bottom-left-radius:0;border-top-left-radius:0}