@import url(https://fonts.googleapis.com/css?family=Roboto:400,500,700);

button,
input,
select {
    vertical-align: middle
}

a,
button {
    text-decoration: none
}

body,
html {
    height: 100vh;
    width: 100vw;
    margin: 0;
    padding: 0;
    left: 0;
    top: 0;
    font-size: 100%;
    background-image: radial-gradient(#ff5d71, #EB3349);
}

* {
    font-family: Roboto, Helvetica, Arial, sans-serif;
    color: #333447;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased
}

p {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.8
}

h1 {
    font-size: 18px;
    font-weight: 500;
    color: #757575;
    margin: 10px;
    text-align: center;
}

ul {
    padding: 0;
    list-style: none;
    font-size: 14px
}

input[type=number]::-webkit-inner-spin-button,
input[type=number]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    margin: 0
}

.container {
    position: absolute;
    width: 80%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    border-radius: 10px;
    padding: 1rem 1.5rem;
    box-shadow: 0 0 27px 0 rgba(0, 0, 0, 0.3);
}

.convert-box {
    background-color: #e2e2e2;
    margin: 15px 0 0;
    padding: 18px 13px 13px;
    border-radius: 5px;
}

.col-amount,
.col-button,
.col-period {
    margin: 0;
    font-family: Roboto, Helvetica, Arial, sans-serif;
    overflow: hidden;
    display: inline-block
}

.col-amount {
    width: 25%;
    margin-right: 2%;
    float: left
}

.col-period {
    width: 73%;
    float: left
}

.col-button {
    width: 100%;
    margin-top: 15px
}

fieldset {
    margin: 0;
    padding: 0;
    border: 0
}

button,
input {
    display: inline-block
}

input {
    border: 0 solid #cccccc;
    border-radius: 4px;
    font-size: 16px;
    width: 100%;
    padding: 5px;
    box-sizing: border-box;
    height: 35px;
    outline: none;
    text-align: center
}

select {
    box-shadow: none;
    border: 0 solid #cccccc;
    border-radius: 4px;
    margin: 0;
    background-color: #ffffff;
    padding: 0 5px;
    box-sizing: border-box;
    display: block;
    font-size: 16px;
    height: 35px;
    width: 100%;
    outline: none;
}

button {
    background-color: #ffcc00;
    color: #353842;
    font-weight: 700;
    font-family: inherit;
    font-size: 16px;
    padding: 5px 10px;
    border: transparent;
    border-radius: 4px;
    text-align: center;
    zoom: 1;
    white-space: nowrap;
    cursor: pointer;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    height: 35px;
    width: 100%;
    transition: scale .2s ease-in-out;
}

button:active {
    scale: 0.98;
}


.content {
    float: none;
    width: 100%;
    margin: 0 10px
}

#time {
    font-size: 22px;
    margin: 0
}

#date {
    font-size: 18px;
    margin: 0
}

.hide {
    display: none
}

.show {
    display: block
}

@media (min-width:768px) {
    .container {
        width: 600px;
        margin: 0 auto;
        padding: 1rem 2rem;
    }

    h1 {
        font-size: 24px;
        margin: 10px 0
    }

    h2 {
        font-size: 18px
    }

    .col-amount {
        width: 20%;
        float: left;
        margin: 0
    }

    .col-period {
        width: 45%;
        float: left;
        margin: 0 5%
    }

    .col-button {
        width: 25%;
        float: left;
        margin: 0
    }

    #time {
        font-size: 36px;
        margin: 0
    }

    #date {
        font-size: 24px;
        margin: 0
    }

    .convert-box {
        margin: 25px 0;
        padding: 30px 25px 26px
    }

    input,
    select,
    button {
        height: 45px
    }
}