Hover doesnt cover it all

.main-navigation {
    display: block;
    float: left;
    margin: 0 auto;
    max-height: 64px;
    position: relative;
}
ul.nav-container,
.nav-container > ul {
    margin: 0;
    padding: 0 20px 0 0;
}
.nx-no-search ul.nav-container,
.nx-no-search .nav-container > ul  {
    padding: 0px;
}
.nav-container li {
    display: inline-block;
    position: relative;
    padding: 0px 0px;
    margin-top:-5px;
}
.nav-container li a {
    height:64px;
    color: #545454;
    display: block;
    /*line-height: 1;*/
    padding: 20px 20px;
    text-decoration: none;
    position: relative;
    margin-top:5px;
}
.nav-container ul ul li {
    padding: 0px;
}
.nav-container ul ul li a {
    padding: 15px 20px;
}
.nav-container .current_page_item > a,
.nav-container .current_page_ancestor > a,
.nav-container .current-menu-item > a,
.nav-container .current-menu-ancestor > a,
.nav-container li a:hover {
    color: #FFFFFF;
    background-color: #dd3333;    
}
.nav-container li:hover > a,
.nav-container li a:hover {
    color: #FFFFFF;
    background-color: #dd3333;
}

/* variable color */
.nav-container .sub-menu,
.nav-container .children {
    background-color: #FFFFFF;
    border-top: 2px solid #dd3333; /* variable color */
    display: none;
    padding: 0;
    position: absolute;
    left: 0px;
    z-index: 1002;
    /*top: 64px;*/
    
    -webkit-box-shadow: 0px 3px 2px 1px rgba(0,0,0,0.06);
    -moz-box-shadow: 0px 3px 2px 1px rgba(0,0,0,0.06);
    box-shadow: 0px 3px 2px 1px rgba(0,0,0,0.06);
    
}
.nav-container .sub-menu ul,
.nav-container .children ul {
    border-left: 0;
    left: 100%;
    top: 0px;
    margin-top: -2px;
}
.nav-container li:last-child .sub-menu ul,
.nav-container li:last-child .children ul {
    left: 0%;
    right: auto;
    width: 200px;
    margin-left: -200px;
    top: 0px;
    margin-top: -2px;
}
ul.nav-container ul a,
.nav-container ul ul a {
    margin: 0;
    width: 200px;
    border-top: 1px solid #e7e7e7;
    padding: 10px 16px;
}
ul.nav-container ul li:first-child a,
.nav-container ul ul li:first-child a {
    border: none;
}
ul.nav-container ul a:hover,
.nav-container ul ul a:hover {
    color: #FFF;
    background-color: #dd3333;
}

https://linustechtips.com/main/uploads/monthly_2017_11/image.png.a38f7ce6e71e9337510b9261e1a8d64f.png

do you guys know know how to fix this?

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