style.css

/*--------------------------------------------------------------
Tipografia
--------------------------------------------------------------*/

body,
button,
input,
select,
textarea {
	font-family: Arial, Helvetica, sans-serif;
	font-size: 18px;
	line-height: 1.5;
}


p {
	margin-bottom: 1em;
}


/*--------------------------------------------------------------
Layout
--------------------------------------------------------------*/

body {
    margin: 0;
    padding: 0;
    background-color: #a55eea;
}

.masthead {
    padding: 1em;
    background-color: #2A2C2B;
    color: white;
}

.masthead h1 {
    text-align: center;
}

.btn {
    text-decoration: none;
    text-align: center;
    padding: .5em 1em;
    font-size: 1em;
    font-weight: bold;
    color: white;
    background: transparent;
    border: 2px solid white;
    border-radius: 5px;
    margin-top: 20px;
}

.btn:hover {
    cursor: pointer;
    transition: 0.3s;
    color: #a55eea;
    background-color: white;
}

.intro {
    padding: 2em 2em;
    color: white;
    background: #a55eea;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.intro p {
    text-align: center;
}

.intro p,
.test-area {
    margin: 0 auto;
    max-width: 550px;
}

.test-area {
    margin-bottom: 5em;
    padding: 0 2em;
}

.test-wrapper {
    border: 5px solid #8854d0;
    border-radius: 5px;
}

#origin-text {
    margin: 1em 0;
    padding: 1em 1em 0;
    background-color: white;
    border-radius: 5px;
}

#origin-text p {
    margin: 0;
    padding-bottom: 1em;
}

.test-wrapper {
    display: flex;
}

.test-wrapper textarea {
    flex: 1;
}

.meta {
    margin-top: 1em;
    display: flex;
    justify-content: space-between;
}

.timer {
    font-size: 3em;
    font-weight: bold;
    color: white;
}

#reset {
    padding: .5em 2em;
    font-size: 1.2em;
    font-weight: bold;
    color: white;
    background: transparent;
    border: 5px solid white;
    border-radius: 5px;
}

#reset:hover {
    cursor: pointer;
    transition: 0.3s;
    color: #a55eea;
    background-color: white;
}

@media only screen and (max-width: 600px) {
    .masthead h1 {
        font-size: 1.4rem;
    }

    .intro {
        padding: 1em;
    }

    .intro p {
        font-size: 1rem;
    }

    .test-area {
        margin-bottom: 1em;
        padding: 0 0.5em;
    }

    .meta {
        max-width: 100vw;
        padding: 0 0.5em;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .timer {
        font-size: 1.5em;
    }

    #reset {
        padding: .2em 1em;
        font-size: 1em;
    }
}