style.css

*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Montserrat';
}

header{
    background-color: #B3093F;
    text-align: center;
    color: white;
    padding: 20px 0;
    font-size: 16px;
}

.lista-cadastro{
    display: flex;
    margin: 20px 0;
    padding: 0 20px;
}

@media (max-width: 525px){
    .lista-cadastro{
        display: flex;
        flex-direction: column;
        gap: 15px;
    }
}

.lista-cadastro input[type=text],
.lista-cadastro input[type=number]{
    flex: 1;
    height: 30px;
    padding-left: 20px;
    margin-left: 5px;
}

.lista-produto-single{
    padding: 10px 0;
    margin: 20px 0;
    border-bottom: 1px solid #ccc;
    display: flex;
}

.lista-produto-single h3{
    flex: 1;
    padding: 0 20px;
}

h3.price-produto{
    text-align: right;
    font-size: 12px;

}

h3.price-produto > span{
    background-color: #B3093F;
    padding: 8px 10px;
    border-radius: 20px;
    color: white;
}

.soma-produto{
    margin: 20px;
    display: flex;
}

.soma-produto h2{
    flex: 1;
    text-align: right;
}

.bt {
    margin-left: 5px;
    border:1px solid #25692A;
    border-radius:4px;
    display:inline-block;
    cursor:pointer;
    font-family:Verdana;
    font-weight:bold;
    font-size:13px;
    padding:6px 10px;
    text-decoration:none;
} 
    
.bt-vd {
    border-color:#68b465;
    background:linear-gradient(to bottom, #abd5aa 5%, #68b465 100%);
    box-shadow:inset 0px 1px 0px 0px #e3f1e3;
    color:#fff;
    text-shadow:0px 1px 0px #528009;
}

.bt-vd:hover {
    background:linear-gradient(to bottom, #68b465 5%, #abd5aa 100%);
}

.bt-vm {
    margin: 20px;
    border-color:#f61f0e;
    background:linear-gradient(to bottom, #fca8a1 5%, #f61f0e 100%);
    box-shadow:inset 0px 1px 0px 0px #fff4f3;
    color:#fff;
    text-shadow:0px 1px 0px #528009; 
}

.bt-vm:hover {
    background:linear-gradient(to bottom, #f61f0e 5%, #fca8a1 100%);
}