main.css

body, html {
    margin: 0;
    font-family: 'Roboto', sans-serif;
}

#modal {
    visibility: hidden;
    z-index: 1;
    position: fixed;
    background: rgba(0,0,0,0.2);
    height: 100vh;
    width: 100vw;
}
#modal .modal-body {
    background: black;
    border-radius: 5px;
    padding: 2px 10px 8px;
    max-width: 600px;
    margin: 20px auto;
}
.modal-body{
    color: white;
}

.modal-body .btn-action {
    font-size: 1.7em;
    background: white;
    border: solid black;
    float:right;
}
.modal-body .btn-action.cancel {
    background: red;
}


.modal-control {
    overflow: auto;
}

.modal-body .btn-action:hover {
    background: #aaaaaa;
}
#text {
    width: 100%;
    display: block;
    min-height: 250px;
    overflow: hidden;
}

.timer {
    padding: 5px;
    position: relative;
    box-sizing: border-box;
}
.paddinger {
    width: 33.3%;
    padding: 5px;
}
.timer-time {
    font-size: 2em;
}
.timer .separator {
    width: 90%;
    margin-bottom: 1.5em;
}
.timer-action {
    position: absolute;
    right: 0.4em;
    top: 0.4em;
}
.timer-action .material-icons {
    font-size: 50px;
}


.seconds:after {
    content: "";
    display: block;
}

/* tlacitko */
.btn {
    width: 4em;
    text-align: center;
    height: 4em;
    font-size: 2em;
    overflow: hidden;
}
.btn-small {
    width: 2em;
    height:2em;
    line-height: 2.9em;
}
.btn:focus {
    outline: none;
}

.btn.bg-red:hover {
    background-color: #c9302c;
}

.circle {
    border-radius: 100%;
}

.btn-float {
    position: fixed;
    bottom: 1em;
    right: 1em;
    overflow: hidden;
}
/* ripple effect vykradeno z: https://codepen.io/lehollandaisvolant/pen/dMQXYX */
.btn:after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, .5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

@keyframes ripple {
    0% {
        transform: scale(0, 0);
        opacity: 1;
    }
    20% {
        transform: scale(25, 25);
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: scale(40, 40);
    }
}

.btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

/* Colors */
.bg-green {
    background-color: #43a047;
}
.bg-green.border {
    border: #1b5e20 solid 2px;
}
.bg-orange {
    background-color: #fb8c00;
}
.bg-orange.border {
    border: #e65100 solid 2px;
}
.bg-blue {
    background-color: #039be5;
}
.bg-blue.border {
    border: #01579b solid 2px;
}

.bg-lime {
    background-color: #c0ca33;
}
.bg-lime.border {
    border: #827717 solid 2px;
}


.bg-red {
    background-color: #c9302c;
}
.text-white {
    color: white;
}
/* Masonry
    From: http://thenewcode.com/844/Easy-Masonry-Layout-With-Flexbox
 */

#masonry {
    display: -webkit-flex;
    display: flex;
    -webkit-flex-flow: column wrap;
    flex-flow: column wrap;
    -webkit-align-content: stretch;
    align-content: stretch;
    height: 100vh;
}
.float-left {
    float: left;
    font-size: 1.5em;
}