::selection {
    background-color: #222;
    color: #efefef;
}

::-moz-selection {
    background-color: #222;
    color: #efefef;
}

.wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
}

header h1 {
    margin: 20px 0;
}

main {
    display: flex;
    flex-direction: column;
}

.controls-wrapper {
    display: flex;
}

.control-wrapper {
    margin: 10px;
    padding: 10px;
    text-align: center;
}

.control-display {
    display: flex;
    justify-content: center;
    align-items: center;
}

.control-heading {
    color: #333;
}

.controls {
    border: 1px solid gray;
    padding: 6px 10px;
    cursor: pointer;
    margin: 10px;
    transition-duration: 0.25s;
    user-select: none;
}

.controls:hover {
    border-color: gray;
}

.controls.increment {
    transform: rotate(90deg);
}

.controls.decrement {
    transform: rotate(-90deg);
}

#session-length,
#break-length {
    font-weight: 600;
}

.timer-wrapper {
    background: #fff2;
    border-radius: 5px;
    padding: 20px;
    text-align: center;
     background: #e0e0e0;
     box-shadow: 8px 8px 17px #a6a6a6,
     -8px -8px 17px #ffffff;
     border-radius: 27px;
}

.session-heading h3 {
    font-size: 25px;
    text-transform: capitalize;
    color: gray;
}

.session-timer {
    font-size: 50px;
}

.session-controls {
    display: flex;
    justify-content: center;
    font-size: 25px;
}

.session-controls .controls {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 40px;
    padding: 0;
    user-select: none;
}

@media only screen and (max-width: 650px) {
    .controls-wrapper {
        flex-direction: column;
        margin-bottom: 10px;
    }

    .control-wrapper {
        margin: 0;
        padding: 5px;
    }
}

html {
    text-align:center;
    color:gray;
    margin:50px;
    padding:10px;
    background: #e0e0e0;
    box-shadow: 8px 8px 17px #a6a6a6,
     -8px -8px 17px #ffffff;
    border-radius: 27px;
}