*{
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}
.container{
    width: 100%;
    height: 100vh;
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url(./background.jpg) no-repeat;
    background-size: cover;
    background-position: center;
}
.title{
    width: 100%;
    height: 10vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}
.title h1{
    font-size: 25px;
    color: #fff;
}
.calculator{
    width: 100%;
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
}
.contents{
    width: 400px;
    height: 50vh;
    background: #f6f9fc;
    border-radius: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    position: relative;
}
.contents input{
    width: 200px;
    height: 50px;
    border: none;
    outline: none;
    background: #fff;
    box-shadow: 0 2px 4px rgb(50 50 93 / 10%);
    margin-bottom: 0.5em;
    padding: 0 0.5em;
    font-size: 16px;
}
.button-calc{
    display: flex;
    align-items: center;
    justify-content: center;
}
.button-calc button{
    width: 50px;
    height: 50px;
    border: none;
    outline: none;
    background: rgb(61 124 226);
    color: #fff;
    font-size: 20px;
    cursor: pointer;
    border: 0.1px solid rgba(255, 255, 255, 0.226);
}
.button-calc button:hover{
    background: #fff;
    box-shadow: 0 2px 4px rgb(50 50 93 / 10%);
    color: #000;
}
.contents p{
    margin: 0.5em 0;
    font-size: 18px;
}
.clear{
    position: absolute;
    top: .5em;
    right: .5em;
}
.clear button{
    width: 80px;
    height: 30px;
    font-size: 16px;
    border: none;
    outline: none;
    cursor: pointer;
    background: red;
    color: #fff;
}
/* box-shadow: 0 2px 4px rgb(50 50 93 / 10%); */