为什么我的Menu Tips没有居中，还有banner下有一条白线

.index-banner {

position: relative;

/*background: #b3b3b3;*/

}

.index-banner-bg {

height: 570px;

overflow: hidden;

}

.index-banner-bg img{

margin: 0 auto;

}

.index-banner-text {

position: absolute;

top: 200px;

left: 50%;

margin-left: -388px;

}

.index-banner-text .text-logo {

width: 776px;

height: 117px;

background: url("../images/index-banner-textlogo.png") no-repeat;

}

.index-banner-text .text-info {

margin-top: 17px;

text-align: center;

color: #fff;

}

.index-banner-text .text-info .line {

display: inline-block;

width: 40px;

border-top: 1px solid #fff;

vertical-align: middle;

*margin-top: 22px;

}

/*.index-banner-text .text-info .line-l {

margin-right: 26px;

}

.index-banner-text .text-info .line-r {

margin-left: 26px;

}*/

.index-banner-text .text-info .txt {

margin: 0 26px;

}

/*菜单*/

.index-menu {

position: relative;

border-top: 4px solid #f34949;

}

.index-menu .menu-tips {

position: absolute;

left: 50%;

top: 0%

margin-left: -78px;

width: 156px;

height: 75px;

text-align: center;

line-height: 65px;

color: #fff;

background: #f34949;

}

.index-menu .menu-tips:after {

position: absolute;

content: "";

left: 0;

bottom: 0;

width: 0;

height: 0;

border-left: 78px solid transparent;

border-right: 78px solid transparent;

border-bottom: 10px solid #fff;

}

.index-menu .menu-list {

margin-top: 150px;

color: #555;

overflow: hidden;

}

.index-menu .menu-list ul {

width: 1160px;

/*background: #003bb3;*/

}

.index-menu .menu-item {

float: left;

width: 520px;

margin-right: 60px;

margin-bottom: 56px;

}

.index-menu .menu-item .title, .index-menu .menu-item .line{

float: left;

}

.index-menu .menu-item .price{

float: right;

}

.index-menu .menu-item .title{

width: 230px;

color: #555;

overflow: hidden;

white-space: nowrap;

text-align: ellipsis;

}

.index-menu .menu-item .comment{

margin-top: 4px;

color: #b7b7b7;

font-size: 12px;

}

.index-menu .menu-item .line{

margin-top: 10px;

width: 192px;

border-top: 1px solid #e3e1e1;

}

.index-menu .menu-more-btn{

margin: 0 auto;

width: 114px;

height: 32px;

padding-left: 16px;

border: 1px solid #d7d5d5;

font-size: 14px;

line-height: 32px;

color: #b7b7b7;

}

.index-menu .menu-more-btn .icon {

display: inline-block;

width: 11px;

height: 7px;

margin-left: 10px;

background: url("../images/index-btn-icon.gif") no-repeat;

}

.index-panel {

margin-top: 200px;

}

.index-panel-header h3 {

float: left;

font-size: 20px;

color: #3b3b3b;

font-weight: normal;

margin-right: 48px;

}

.index-panel-header .line {

float: left;

margin-top: 11px;/*老师说的是10*/

width: 200px;

border-top: 1px solid #e5e3e3;

}

.index-panel-header .btn-group {

font-size: 0;

float: right;

}

.index-panel-header .btn {

display: inline-block;

margin-left: 11px;

width: 9px;

height: 9px;

background: #dedede;

border-radius: 50%;

}

.index-panel-header .active {

background: #9b9b9b;

}

.index-panel-body {

margin-top: 75px;

}

.index-food-list {

overflow: hidden;

}

.index-food-list ul {

width: 1160px;

}

.index-food-list .food-item {

float: left;

width: 230px;

margin-right: 60px;

}

.index-food-list .food-item .banner {

margin-bottom: 30px;

height: 202px;

}

.index-food-list .food-item .name {

color: #555;

/*font-size: 16px;*/

margin-bottom: 10px;

}

.index-food-list .food-item .price {

float: right;

}

.index-food-list .food-item .star-bar {

font-size: 0;

}

.index-food-list .food-item .star {

display: inline-block;

width: 12px;

height: 13px;

margin-right:5px;

background-image: url("../images/index-star.png");

background-repeat: no-repear;

}

.index-food-list .food-item .nostar {

background-position: 0 -12px;

}

.index-pics {

height: 380px;

overflow: hidden;

margin-bottom: 200px;/*自己加上去的*/

}

.index-pics .pic-col {

float: left;

}

.index-pics .pic-col-m {

width: 353px;

}

.index-pics .pic-col-s {

width: 287px;

}

.index-pics .pic-col-l {

width: 460px;

}