style.css

@import url('https://fonts.googleapis.com/css2?family=Comfortaa:wght@700&family=Righteous&display=swap');
:root {
    --white : #fff;
    --black : #1c2b2d;
    --light-blue : #9d0191;
    --color-sec : #db6400;
    --grey : #eee;
    --dark-gray: #223831;
}
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
font-size: 10px;
background-image: url('Numbers.jpg');
}
p{
    font-size: 1.6rem;
    line-height: 1.5;
}
img{
    width: 100%;
}
.container{
    max-width: 900px;
    margin: 0 auto;
    padding:0 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}
.counter-div{
    width: 40rem;
    border:1px solid var(--grey);
    padding:1 rem;
    background-image: url('Random.jpg');
    color:var(--white);
    text-align: center;
    border-radius: 5px;
}

.counter-div > * {
    margin-bottom: 2rem;
}

.count{
    font-size:4rem
}

.buttons button{
    padding: 1rem;
    margin:0 1rem;
    font-size:1.5rem;
    color:var(--white);
    font-weight:700;
    border: none;
    outline: none;
    border-radius: 3px;
}

button.subtract {
    background-image: linear-gradient( 135deg, #FDEB71 10%, #F8D800 100%);
}
button.subtract:hover{
    color: black;
}
button.reset {
    background-color: #ffffff17;
    color: black;
    font-family: 'Comfortaa',cursive;
    font-size: x-large;
}
button.add {
    background-image: linear-gradient( 135deg, #FCCF31 10%, #F55555 100%);
}
button.reset:hover{
    background-color: #ffffff7d;
}
h1{
    margin-top: 20px;
    font-family: 'Comfortaa', cursive;
    color: black;
    font-size: xx-large;
    
}
.header-container{
background-color: #eeeeeea6;
border-radius: 30px;
margin: 30px;
align-self: center;
}
span{
    background-color: #fff;
    border-radius: 2px;
    color: black;
    font-size: 50px;
    font-family: 'Comfortaa', cursive;
}