I have solved:
/wp-content/themes/neighborhood/style.css line 7818 add width:100%
.woocommerce div.product form.cart .variations td.value {
height: auto;
margin-bottom: 10px;
overflow: hidden;
position: relative;
width: 100%;
}
and line 7794 add width: 110%;
.woocommerce div.product form.cart .variations select {
-moz-appearance: none;
background-image: url("images/[email protected]");
background-position: 90% center;
background-repeat: no-repeat;
background-size: 9px 6px;
border: medium none;
border-radius: 0;
cursor: pointer;
display: inline-block;
height: 42px;
line-height: 16px;
outline: medium none;
padding: 14px 25px 12px 15px;
text-indent: 0.01px;
text-overflow: "";
vertical-align: top;
width: 110%;
z-index: 2;
}
Bye!!!