:root{
    --box-shadow:0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
}

*{
    box-sizing: border-box;
}

body{
    background-color: #87bfdd;
    display:flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

.container{
    margin: 30px auto;
    padding: 40px;
    width: 350px;
    background-color: #F5F5F5;
}

h1{
    letter-spacing: 1px;
    margin: 0;
}

h3{
    border-bottom: 1px solid #bbb;
    padding-bottom: 10px;
    margin: 40px 0 10px;
}

h4{
    margin: 0;
    text-transform: uppercase;
}

.inc-exp-container{
    background-color: #fff;
    box-shadow: var(--box-shadow);
    padding: 20px;
    display: flex;
    justify-content: center;
    margin: 20px 0;
}

.inc-exp-container > div{
    flex:1;
    text-align: center;
}

.inc-exp-container > div:first-of-type{
    border-right: 1px solid #dedede;
}

.money{
    font-size: 2;
    letter-spacing: 1px;
    margin: 5px 0;
}

.money-plus{
    color: #2ecc71;
}

.money-minus{
    color: #c0392b;
}

label{
    display: inline-block;
    margin: 10px 0;
}

input[type="text"],input[type="number"]{
    border: 1px;
    border-radius: 2px;
    display: block;
    font-size: 16px;
    padding: 10px;
    width: 100%;
}

.btn{
    cursor: pointer;
    background-color: #9c88ff;
    box-shadow: var(--box-shadow);
    color: #fff;
    border: 0;
    display: block;
    font-size: 16px;
    margin: 10px 0 30px;
    padding: 10px;
    width: 100%;
}

.btn:focus,.delete-btn:focus{
    outline: 0;
}

.list{
    list-style-type: none;
    padding: 0;
    margin-bottom: 40px;
}

.list li{
    background-color: #fff;
    box-shadow: var(--box-shadow);
    color: #333;
    display: flex;
    justify-content: space-between;
    position: relative;
    padding: 10px;
    margin: 10px 0;
}

.list li.plus{
    border-right: 5px solid #2ecc71;
}

.list li.minus{
    border-right: 5px solid #c0392b;
}

.delete-btn{
    cursor: pointer;
    background-color: #e74c3c;
    border: 0;
    color: #fff;
    font-size: 20px;
    line-height: 20px;
    padding: 2px 5px;
    position: absolute;
    top: 0%;
    left: -2%;
    transform: translate(-100%, 50%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.list li:hover .delete-btn{
    opacity: 1;
}